So, is there any way to use the windows xp task manager on windows 2000? I tried copying over the exe from the XP install CD, and expanding it using expand.exe, and it choked looking for a procedure ...

I have a windows 7 and an xp machine. With 7 it's pretty easy to see whether you have enough memory or not (open task manager and see if you have significant amounts of "unused" memory) but with xp ...