diff --git a/doc/sim_form.php b/doc/sim_form.php
new file mode 100644
index 0000000000..49bf2c52e5
--- /dev/null
+++ b/doc/sim_form.php
@@ -0,0 +1,175 @@
+<?php
+
+function show_form() {
+    echo "
+    <h2>BOINC client simulator</h2>
+    <form action=sim_form.php method=post>
+
+    sim_projects.xml:
+    <br>
+    <textarea name=projects rows=10 cols=80><projects>
+    <project>
+        <project_name>P1</project_name>
+        <resource_share>100</resource_share>
+        <app>
+            <latency_bound>15000</latency_bound>
+            <fpops_est>3600</fpops_est>
+            <fpops>
+                <mean>3600</mean>
+                <stdev>10</stdev>
+            </fpops>
+            <working_set>1e7</working_set>
+        </app>
+        <available>
+            <frac>.7</frac>
+            <lambda>1000</lambda>
+        </available>
+    </project>
+    <project>
+        <project_name>P2</project_name>
+        <resource_share>50</resource_share>
+        <app>
+            <latency_bound>10000</latency_bound>
+            <fpops_est>1800</fpops_est>
+            <fpops>
+                <mean>1800</mean>
+                <stdev>10</stdev>
+            </fpops>
+            <working_set>1e7</working_set>
+        </app>
+        <available>
+            <frac>.7</frac>
+            <lambda>1000</lambda>
+        </available>
+    </project>
+</projects></textarea>
+
+    <p>
+    sim_host.xml:
+    <br>
+    <textarea name=host rows=10 cols=80><host>
+    <p_fpops>1</p_fpops>
+    <m_nbytes>1e9</m_nbytes>
+    <connection_interval>600</connection_interval>
+    <p_ncpus>2</p_ncpus>
+    <available>
+        <frac>.8</frac>
+        <lambda>1000</lambda>
+    </available>
+</host></textarea>
+
+    <p>
+    sim_prefs.xml:
+    <br>
+    <textarea name=prefs rows=10 cols=80><global_preferences>
+    <source_project>http://isaac.ssl.berkeley.edu/alpha/</source_project>
+    <source_scheduler>isaac.ssl.berkeley.edu/alpha_cgi/cgi</source_scheduler>
+<mod_time>1170192285</mod_time>
+<run_if_user_active/>
+<idle_time_to_run>3</idle_time_to_run>
+<leave_apps_in_memory/>
+<cpu_scheduling_period_minutes>1</cpu_scheduling_period_minutes>
+<hangup_if_dialed/>
+<work_buf_min_days>0.1</work_buf_min_days>
+<work_buf_additional_days>0</work_buf_additional_days>
+<max_cpus>4</max_cpus>
+<cpu_usage_limit>100</cpu_usage_limit>
+<disk_interval>180</disk_interval>
+<disk_max_used_gb>100</disk_max_used_gb>
+<disk_max_used_pct>50</disk_max_used_pct>
+<disk_min_free_gb>2</disk_min_free_gb>
+<vm_max_used_pct>75</vm_max_used_pct>
+<ram_max_used_busy_pct>50</ram_max_used_busy_pct>
+<ram_max_used_idle_pct>90</ram_max_used_idle_pct>
+<max_bytes_sec_down>200000</max_bytes_sec_down>
+<max_bytes_sec_up>200000</max_bytes_sec_up>
+</global_preferences></textarea>
+
+    <p>
+    cc_config.xml:
+    <br>
+    <textarea name=cc_config rows=10 cols=80><cc_config>
+    <log_flags>
+        <mem_usage_debug>0</mem_usage_debug>
+        <cpu_sched_debug>1</cpu_sched_debug>
+        <cpu_sched>1</cpu_sched>
+        <rr_simulation>0</rr_simulation>
+        <benchmark_debug>1</benchmark_debug>
+        <task_debug>1</task_debug>
+        <work_fetch_debug>1</work_fetch_debug>
+        <app_msg_send>0</app_msg_send>
+        <unparsed_xml/>
+    </log_flags>
+</cc_config></textarea>
+
+    <p>
+    Duration: <input name=duration value=86400>
+    Time step: <input name=delta value=60>
+    <p>
+    Server uses workload? <input type=checkbox name=suw>
+    <p>
+    Client uses RR CPU sched? <input type=checkbox name=rr_only>
+    <p>
+    DCF: <input type=radio name=dcf value=normal checked> Normal
+        : <input type=radio name=dcf value=stats> Stats
+        : <input type=radio name=dcf value=dual> Dual
+        : <input type=radio name=dcf value=none> None
+    <p>
+    <input type=submit name=submit>
+
+    </form>
+    ";
+}
+
+if ($_POST['submit']) {
+    chdir("sim");
+
+    $x1 = file_put_contents("sim_projects.xml", $_POST['projects']);
+    $x2 = file_put_contents("sim_host.xml", $_POST['host']);
+    $x3 = file_put_contents("sim_prefs.xml", $_POST['prefs']);
+    $x4 = file_put_contents("cc_config.xml", $_POST['cc_config']);
+    if (!$x1 || !$x2 || !$x3 || !$x4) {
+        echo "Can't write files - check permissions\n";
+        exit();
+    }
+    $duration = $_POST['duration'];
+
+    if ($duration > 100000) {
+        echo "duration must be <= 100000";
+        exit();
+    }
+    $delta = $_POST['delta'];
+    if ($delta < 1) {
+        echo "time step must be >= 1";
+        exit();
+    }
+
+    $suw = '';
+    if ($_POST['suw']) {
+        $suw = '--server_uses_workload';
+    }
+
+    $rr_only = '';
+    if ($_POST['rr_only']) {
+        $rr_only = '--cpu_sched_rr_only';
+    }
+
+    $dcfflag = "";
+    $dcf = ($_POST['dcf']);
+    if ($dcf == "stats") {
+        $dcfflag = '--dcf_stats';
+    } else if ($dcf == 'none') {
+        $dcfflag = '--dcf_dont_use';
+    } else if ($dcf == 'dual') {
+        $dcfflag = '--dual_dcf';
+    }
+
+    Header("Location: sim/sim_out.html");
+    $cmd = "./sim --duration $duration --delta $delta $suw $dcfflag $rr_only";
+    system("/bin/rm sim_log.txt sim_out.html");
+    system($cmd);
+} else {
+    show_form();
+}
+
+?>