Check out some of the computer repair shops in your area. See if they have a windows 2000 server cd that has the same part number as what is on your sticker.
Example: The CD will have something like "Part No. X05-07185" and the sticker will have "X05-54512" if both the cd and sticker have X05, or X11, or whatever, you should be able to reinstall with that cd.
But if you're just wanting to repair, and not reinstall, then any cd should work.