Network Trouble Shooting help.

[Greg Neumann]

Anybody know anybody qualified to do network trouble shooting for a 
Windows 2000/XP setup?
Intuit tech supports blames network hardware/settings for troubles we're 
having. I don't have the equipment or real expertise to do this. It's a 
very small network setup, 11 pc's, (one pretending to be a 
server,another pretending to be a firewall), 2 print servers, one 
networked printer connected by various 10/100 8 port switches. I've 
checked all that I can (looks like it's connected, the status lights 
show "good", pings go through in good time) but ... I can't find any of 
the "lag" or bandwidth hogging processes that Intuit insists is causing 
the problems. I've gone so far as to disconnect everything but the 
server and a single workstation.
Anyway, as this could be marginal hardware, and I have no tools for 
checking that, I've been asked to seek outside assistance.
Runs TCP/IP in a Win2000 environment. NO active Linux boxes connected, 
and I'm not real familiar w/ network troubleshooting tools. This will, 
of course, pay some money.
Any recommendations?
Thanks,
Greg Neumann