diff --git a/checkin_notes b/checkin_notes
index d833bdd56f..743138dfe9 100644
--- a/checkin_notes
+++ b/checkin_notes
@@ -2179,3 +2179,18 @@ David  Mar 10 2008
         util.C,h
     sched/
         server_types.C,h
+
+David  Mar 10 2008
+    - Second pass at the above.  We still need run_program() in util.C.
+        The problem was that there's a lot of extra stuff needed
+        for running apps on Windows (e.g. related to sandboxing).
+        This needed to be a new function.
+
+    clientgui/
+        MainDocument.cpp
+    clientscr/
+        screensaver.cpp
+    lib/
+        Makefile.am
+        proc_control.C,h
+        util.C,h
diff --git a/clientgui/MainDocument.cpp b/clientgui/MainDocument.cpp
index 45318267ca..63e215f412 100644
--- a/clientgui/MainDocument.cpp
+++ b/clientgui/MainDocument.cpp
@@ -1257,12 +1257,11 @@ int CMainDocument::WorkShowGraphics(RESULT* result)
         argv[0] = "--graphics";
         argv[1] = 0;
         
-        iRetVal = run_program(
+        iRetVal = run_app_windows(
             result->slot_path.c_str(),
             result->graphics_exec_path.c_str(),
             1,
             argv,
-            0,
             id
         );
 #endif
diff --git a/clientscr/screensaver.cpp b/clientscr/screensaver.cpp
index ef60d5bf01..c08ece957f 100644
--- a/clientscr/screensaver.cpp
+++ b/clientscr/screensaver.cpp
@@ -175,6 +175,7 @@ int CScreensaver::launch_screensaver(RESULT* rp, int& graphics_application)
         argv[0] = "app_graphics";   // not used
         argv[1] = "--fullscreen";
         argv[2] = 0;
+#ifdef _WIN32
         retval = run_program(
             rp->slot_path.c_str(),
             rp->graphics_exec_path.c_str(),
@@ -183,6 +184,15 @@ int CScreensaver::launch_screensaver(RESULT* rp, int& graphics_application)
             0,
             graphics_application
         );
+#else
+        retval = run_app_windows(
+            rp->slot_path.c_str(),
+            rp->graphics_exec_path.c_str(),
+            2,
+            argv,
+            graphics_application
+        );
+#endif
 #endif
     } else {
         // V5 and Older
diff --git a/lib/Makefile.am b/lib/Makefile.am
index 354599e6c0..73b8968742 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -74,7 +74,6 @@ libboinc_a_SOURCES = \
     parse.C \
     prefs.C \
     procinfo_unix.C \
-	proc_control.C \
     proxy_info.C \
     shmem.C \
     str_util.C \
diff --git a/lib/proc_control.C b/lib/proc_control.C
index aa946111f3..d8b97e7a45 100644
--- a/lib/proc_control.C
+++ b/lib/proc_control.C
@@ -17,35 +17,23 @@
 // or write to the Free Software Foundation, Inc.,
 // 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
-// Code used by BOINC components (screensaver, manager, updater)
-// Don't include this in libboinc
+// Code to run a BOINC application (main or graphics) under Windows
+// Don't include this in applications
 
 #if defined(_WIN32) && !defined(__STDWX_H__) && !defined(_BOINC_WIN_) && !defined(_AFX_STDAFX_H_)
 #include "boinc_win.h"
 #endif
 
-#ifdef _WIN32
 #include "win_util.h"
-#else
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <errno.h>
-#include <stdlib.h>
-#endif
 
 #include "filesys.h"
 #include "error_numbers.h"
 #include "common_defs.h"
 #include "util.h"
 
-#ifdef _WIN32
 HANDLE sandbox_account_token = NULL;
 PSID sandbox_account_sid = NULL;
-#endif
 
-#ifdef _WIN32
 void get_sandbox_account_token() {
     FILE* f;
     char buf[256];
@@ -118,17 +106,13 @@ void get_sandbox_account_token() {
         }
     }
 }
-#endif
 
+// Run application, Windows.
 // chdir into the given directory, and run a program there.
-// If nsecs is nonzero, make sure it's still running after that many seconds.
-//
 // argv is set up Unix-style, i.e. argv[0] is the program name
 //
-
-#ifdef _WIN32
-int run_program(
-    const char* dir, const char* file, int argc, char *const argv[], double nsecs, HANDLE& id
+int run_app_windows(
+    const char* dir, const char* file, int argc, char *const argv[], HANDLE& id
 ) {
     int retval;
     PROCESS_INFORMATION process_info;
@@ -235,125 +219,6 @@ int run_program(
         return -1; // CreateProcess returns 1 if successful, false if it failed.
     }
 
-    if (nsecs) {
-        boinc_sleep(nsecs);
-        if (GetExitCodeProcess(process_info.hProcess, &status)) {
-            if (status != STILL_ACTIVE) {
-                return -1;
-            }
-        }
-    }
-
     id = process_info.hProcess;
-
     return 0;
 }
-#else
-int run_program(
-    const char* dir, const char* file, int , char *const argv[], double nsecs, int& id
-) {
-    int retval;
-    int pid = fork();
-    if (pid == 0) {
-        if (dir) {
-            retval = chdir(dir);
-            if (retval) return retval;
-        }
-        execv(file, argv);
-        perror("execv");
-        exit(errno);
-    }
-
-    if (nsecs) {
-        boinc_sleep(3);
-        if (waitpid(pid, 0, WNOHANG) == pid) {
-            return -1;
-        }
-    }
-    id = pid;
-    return 0;
-}
-#endif
-
-#ifdef _WIN32
-void kill_program(HANDLE pid) {
-    TerminateProcess(pid, 0);
-}
-#else
-void kill_program(int pid) {
-    kill(pid, SIGKILL);
-}
-#endif
-
-#ifdef _WIN32
-int get_exit_status(HANDLE pid_handle) {
-    unsigned long status=1;
-    while (1) {
-        if (GetExitCodeProcess(pid_handle, &status)) {
-            if (status == STILL_ACTIVE) {
-                boinc_sleep(1);
-            }
-        }
-    }
-    return (int) status;
-}
-bool process_exists(HANDLE h) {
-    unsigned long status=1;
-    if (GetExitCodeProcess(h, &status)) {
-        if (status == STILL_ACTIVE) return true;
-    }
-    return false;
-}
-
-#else
-int get_exit_status(int pid) {
-    int status;
-    waitpid(pid, &status, 0);
-    return status;
-}
-bool process_exists(int pid) {
-    int p = waitpid(pid, 0, WNOHANG);
-    if (p == pid) return false;     // process has exited
-    if (p == -1) return false;      // PID doesn't exist
-    return true;
-}
-#endif
-
-#ifdef _WIN32
-static int get_client_mutex(const char*) {
-    char buf[MAX_PATH] = "";
-    
-    // Global mutex on Win2k and later
-    //
-    if (IsWindows2000Compatible()) {
-        strcpy(buf, "Global\\");
-    }
-    strcat( buf, RUN_MUTEX);
-
-    HANDLE h = CreateMutex(NULL, true, buf);
-    if ((h==0) || (GetLastError() == ERROR_ALREADY_EXISTS)) {
-        return ERR_ALREADY_RUNNING;
-    }
-#else
-static int get_client_mutex(const char* dir) {
-    char path[1024];
-    static FILE_LOCK file_lock;
-
-    sprintf(path, "%s/%s", dir, LOCK_FILE_NAME);
-    if (file_lock.lock(path)) {
-        return ERR_ALREADY_RUNNING;
-    }
-#endif
-    return 0;
-}
-
-int wait_client_mutex(const char* dir, double timeout) {
-    double start = dtime();
-    while (1) {
-        int retval = get_client_mutex(dir);
-        if (!retval) return 0;
-        boinc_sleep(1);
-        if (dtime() - start > timeout) break;
-    }
-    return ERR_ALREADY_RUNNING;
-}
diff --git a/lib/proc_control.h b/lib/proc_control.h
index 78c204824f..a4dad1b2cc 100644
--- a/lib/proc_control.h
+++ b/lib/proc_control.h
@@ -4,21 +4,6 @@ extern HANDLE sandbox_account_token;
 extern PSID sandbox_account_sid;
 extern void get_sandbox_account_token();
 
-extern int run_program(
-    const char* path, const char* cdir, int argc, char *const argv[], double, HANDLE&
+extern int run_app_windows(
+    const char* path, const char* cdir, int argc, char *const argv[], HANDLE&
 );
-
-extern void kill_program(HANDLE);
-extern int get_exit_status(HANDLE);
-extern bool process_exists(HANDLE);
-
-#else
-extern int run_program(
-    const char* path, const char* cdir, int argc, char *const argv[], double, int&
-);
-extern void kill_program(int);
-extern int get_exit_status(int);
-extern bool process_exists(int);
-#endif
-
-extern int wait_client_mutex(const char* dir, double timeout);
diff --git a/lib/util.C b/lib/util.C
index c91ae257d9..694f590e48 100644
--- a/lib/util.C
+++ b/lib/util.C
@@ -30,8 +30,11 @@
 
 #ifndef _WIN32
 #include "config.h"
+#include <sys/types.h>
 #include <sys/time.h>
+#include <sys/wait.h>
 #include <sys/resource.h>
+#include <errno.h>
 #include <string>
 #include <cstring>
 #endif
@@ -338,4 +341,172 @@ int read_file_string(const char* path, string& result, int max_len, bool tail) {
     return 0;
 }
 
+// chdir into the given directory, and run a program there.
+// If nsecs is nonzero, make sure it's still running after that many seconds.
+//
+// argv is set up Unix-style, i.e. argv[0] is the program name
+//
+
+#ifdef _WIN32
+int run_program(
+    const char* dir, const char* file, int argc, char *const argv[], double nsecs, HANDLE& id
+) {
+    int retval;
+    PROCESS_INFORMATION process_info;
+    STARTUPINFO startup_info;
+    char cmdline[1024];
+    char error_msg[1024];
+    unsigned long status;
+
+    memset(&process_info, 0, sizeof(process_info));
+    memset(&startup_info, 0, sizeof(startup_info));
+    startup_info.cb = sizeof(startup_info);
+
+    strcpy(cmdline, "");
+    for (int i=0; i<argc; i++) {
+        strcat(cmdline, argv[i]);
+        if (i<argc-1) {
+            strcat(cmdline, " ");
+        }
+    }
+
+    retval = CreateProcess(
+        file,
+        cmdline,
+        NULL,
+        NULL,
+        FALSE,
+        0,
+        NULL,
+        dir,
+        &startup_info,
+        &process_info
+    );
+    if (!retval) {
+        windows_error_string(error_msg, sizeof(error_msg));
+        fprintf(stderr, "CreateProcess failed: '%s'\n", error_msg);
+        return -1; // CreateProcess returns 1 if successful, false if it failed.
+    }
+
+    if (nsecs) {
+        boinc_sleep(nsecs);
+        if (GetExitCodeProcess(process_info.hProcess, &status)) {
+            if (status != STILL_ACTIVE) {
+                return -1;
+            }
+        }
+    }
+    id = process_info.hProcess;
+    return 0;
+}
+#else
+int run_program(
+    const char* dir, const char* file, int , char *const argv[], double nsecs, int& id
+) {
+    int retval;
+    int pid = fork();
+    if (pid == 0) {
+        if (dir) {
+            retval = chdir(dir);
+            if (retval) return retval;
+        }
+        execv(file, argv);
+        perror("execv");
+        exit(errno);
+    }
+
+    if (nsecs) {
+        boinc_sleep(3);
+        if (waitpid(pid, 0, WNOHANG) == pid) {
+            return -1;
+        }
+    }
+    id = pid;
+    return 0;
+}
+#endif
+
+#ifdef _WIN32
+void kill_program(HANDLE pid) {
+    TerminateProcess(pid, 0);
+}
+#else
+void kill_program(int pid) {
+    kill(pid, SIGKILL);
+}
+#endif
+
+#ifdef _WIN32
+int get_exit_status(HANDLE pid_handle) {
+    unsigned long status=1;
+    while (1) {
+        if (GetExitCodeProcess(pid_handle, &status)) {
+            if (status == STILL_ACTIVE) {
+                boinc_sleep(1);
+            }
+        }
+    }
+    return (int) status;
+}
+bool process_exists(HANDLE h) {
+    unsigned long status=1;
+    if (GetExitCodeProcess(h, &status)) {
+        if (status == STILL_ACTIVE) return true;
+    }
+    return false;
+}
+
+#else
+int get_exit_status(int pid) {
+    int status;
+    waitpid(pid, &status, 0);
+    return status;
+}
+bool process_exists(int pid) {
+    int p = waitpid(pid, 0, WNOHANG);
+    if (p == pid) return false;     // process has exited
+    if (p == -1) return false;      // PID doesn't exist
+    return true;
+}
+#endif
+
+#ifdef _WIN32
+static int get_client_mutex(const char*) {
+    char buf[MAX_PATH] = "";
+    
+    // Global mutex on Win2k and later
+    //
+    if (IsWindows2000Compatible()) {
+        strcpy(buf, "Global\\");
+    }
+    strcat( buf, RUN_MUTEX);
+
+    HANDLE h = CreateMutex(NULL, true, buf);
+    if ((h==0) || (GetLastError() == ERROR_ALREADY_EXISTS)) {
+        return ERR_ALREADY_RUNNING;
+    }
+#else
+static int get_client_mutex(const char* dir) {
+    char path[1024];
+    static FILE_LOCK file_lock;
+
+    sprintf(path, "%s/%s", dir, LOCK_FILE_NAME);
+    if (file_lock.lock(path)) {
+        return ERR_ALREADY_RUNNING;
+    }
+#endif
+    return 0;
+}
+
+int wait_client_mutex(const char* dir, double timeout) {
+    double start = dtime();
+    while (1) {
+        int retval = get_client_mutex(dir);
+        if (!retval) return 0;
+        boinc_sleep(1);
+        if (dtime() - start > timeout) break;
+    }
+    return ERR_ALREADY_RUNNING;
+}
+
 const char *BOINC_RCSID_ab65c90e1e = "$Id$";
diff --git a/lib/util.h b/lib/util.h
index 12f145405c..ad52811801 100644
--- a/lib/util.h
+++ b/lib/util.h
@@ -75,4 +75,24 @@ extern void boinc_crash();
 extern int read_file_malloc(const char* path, char*&, int max_len=0, bool tail=false);
 extern int read_file_string(const char* path, std::string&, int max_len=0, bool tail=false);
 
+#ifdef _WIN32
+
+extern int run_program(
+    const char* path, const char* cdir, int argc, char *const argv[], double, HANDLE&
+);
+
+extern void kill_program(HANDLE);
+extern int get_exit_status(HANDLE);
+extern bool process_exists(HANDLE);
+
+#else
+extern int run_program(
+    const char* path, const char* cdir, int argc, char *const argv[], double, int&
+);
+extern void kill_program(int);
+extern int get_exit_status(int);
+extern bool process_exists(int);
+#endif
+
+extern int wait_client_mutex(const char* dir, double timeout);
 #endif