Originally posted by: Robor
Windows then Linux. If you do it the other way Windows will overwrite your Linux boot loader.
Edit: Also, you can install Ubuntu alongside your existing Windows 2000 install. When you install Ubuntu there's an option to manually set the partioning. Do that and resize your existing Windows partition to make space for your Linux partition. I've read that you should do a defrag before doing this as well but I'm not positive that it's required. Can't hurt though.