Just windering if anyone is using squirrelmail on a Windows 2000 server

sam75

check its requirements and see if it supports windows or not @their website

Sure does:

http://www.squirrelmail.org/wiki/en_US/InstallingSquirrelMailWindowsApache

I assume it will be no problem under IIS w/ PHP or other webservers as well.

Yes I use Squirre mail in an Winxp Machine and apache as webserver and it works fine