jmitchel, I agree with the comment about diagnostic software not really being able to simulate what windows does to hardware.
The IBM diagnostics software did have a burn-in option which basically works the computer for a specified interval, it runs the memory, HD, cpu, ram, cdrom and floppy under an intense load ... it didnt' freeze or crash.
Yesterday I downloaded a SUSE Linux Live CD and ran that for 10 - 15 mins and it didn't freeze or crash on me ... I am willing to bet that it's something windows-related, now what that is I don't know...
Sampson, yes all the computer is up to date with the latest bios and firmware fixes.
I will keep plugging away and hopefully figure something out, please keep the suggestions coming!