It may be some work right now....but you can do some of the work incrementally....such as reinstalling your programs. Heck, I still haven't reinstalled MS Office over my W98 install yet.
I've found the install CD for Win-2000Pro has a good number of the drivers I needed. If you keep your W98 install and setup your box as a dual boot, you can always use W98 to get you out of trouble should you discover you don't have a critcal driver needed under Win-2000. You may want check some of your hardware for W-2000 drivers ahead of time....that's what I did so I had a nice little cache to pick from...you know, just in case.
Next time I do a fresh install, I doubt I'll even start with W98....buh bye dual boot.