I know this is a little late for you now, but here's what I did on all my XP installs...probably would be the same for 2k. On a clean install I install the w98 DOS version (fat32 support), also the DOS cd driver. Once that is working, I install XP....not as an upgrade, as dual-boot. Now when I boot, I can go to DOS without a floppy, or directly to XP. Works perfect if you need to run DOS programs. Both OSs are on the same "C" partition...no problems.