Web Application Stress Tool doesn't connect to other clients after SP2

Hello,

I was wondering if anyone had any information on what seems to be a problem
after installing SP2 on my WinXP Professional machine. It now seems as
though I can't get my installation of Web Application Stress Tool to connect
to any other Web Application Stress Tool installation on any other server
that I have running in my network. When I try to add additional "clients",
they always status column always reports "failed".

I've turned off the firewall on my machine that SP2 installs, and the other
machines are running Win2K with the latest service packs.

Any thoughts?

Thanks,
Mike.