Networked Software Load Testing

[chief7]

I have a vb app that I am running on a client from a server via a file share. The software works but I would like to load test it to see how many users could access and run the software at once.

What can I use to test this?

[Jean.B]

if you dont have many friends to test that for you, code a winsock program that connects many clones..

when i coded my server, it was tested even with denial of service and distributed denial or service for security reasons, because you need to be sure that there wont be any unexpected errors in case someone really is attacking you..it really stresses the application..