I have an ASP application communicating with a VFP 8 DLL over the internet via IIS.

A potentail Client has asked me:
What is the maximum number of simultaneous requests that can be processed in this way without causing a problem. The server is P4, 2400 with 4GB running Windows 2000 Server.

I need a realistic answer/guess if you have one.
Please - No answers like - you will need to test it to find out.