[UPHPU] IIS timing out

[Merrill Oveson]

Uphpuers:

WebServer: IIS 7
   CGI Time-out: 00:15:00 (15 minutes)
   Connection time-out (in seconds): 1200

php.ini:
   max_execution_time = 3000


This script:

<?php
sleep(60*5);
print "Hi";
?>

returns in IIS: 500 - Internal server error.

In apache it works fine.

What am I missing?

Thanks

Merrill