by Beau Sanders.
Your are right about the ISP limits. Here is a portion of the dialog I am having with my ISP:
"The default value for max_execution_time is 120 seconds. However, raising this limit will most probably not help, because we also have a limit that does not allow the execution of scripts to exceed 60 CPU seconds. This limit cannot be overridden with a php.ini file. There is such a limit in place to ensure the stability of the shared hosting server. There is also an HTTP timeout of 300 seconds."
-Beau