Win 2k From Xp/me: Can I Do This

I have a copy of Win @k that is a legal copy with the number and all that silly stuff, what I want to know is right now I am running on 4Gig of hard disk, and if I install my Win XP and then try to put some other features like Office XP, then all my disk space is gone...So would I be better off to use the Win2K Porfessional software instead of the Win ME that I am presently using or would it eat up the rinky dinky hard drive I am left with on this machine?

With the amount of hard drive space you mentioned, I think it'll be better if you stick to Win2K - it's not as resource hungry as WinXP and would do fine on your system. Xp with Office XP would eat up most of your space leaving very little for smooth operability of windows page files, which take up a large chunk on your OS partition. Win2K on the other hand consumes far less space than XP and is 100% more stable than WinME. Till date, Win2K has been known to be the most stable OS marketted by MS - and according to me, that should be your obvious choice.One thing I'm not really sure of is whether you can install Win2K over ME - although most of the settings (My Documents, Registry settings) are similar - and if worst comes to worst, you should be able to keep your current documents & settings and uninstall ME - then install Win2K over it. Cheers