Creative Savage4 PCI 32MB as primary & ATi Xpert182 AGP 16MB as secondary in Win2K, WinME, and hopefully soon in Linux Mandrake/Cooker.
Basically, if you can do it in Win98, there's a good chance it works (better) in Win2K. Win2K adds the bonus of letting yu change the primary display on-the-fly without a reboot or BIOS settings change.
-SUO