I've got a 5000 that I run Windows 2000 pro on. It has 640 MB of RAM,
PC133 is remarkably cheap these days, just shop around. If you are
planning on getting rid of this computer in a year or so you might
want to consider Win 2k. Personally I prefer it over XP, and I am
assuming (correct me if I am wrong here) it's probally cheaper than
XP. A home user will notice little difference between 2k and XP,
except for WMP 8 and the neat bubble gum GUI. Plus then you can
reinstall Windows when you give it away with no worries about
registration issues.