I have an old PIII I keep around for the grandkids when they come. It's running W2Kpro,...since I have dozens and dozens (or more) old dos and windows games on it for the kids. I'm running an old Nvidia in it (can't think exactly which one just now). But I had the old driver on a CD for it. I think a lot of the older 2-dimension cards will work fine with W2k (like Matrox Millinium). That's one of the old cards that I had in it, before I added the Nvidia. (Got my Nvidia off of Ebay).
Yeah,...I use Vector for all the important stuff on my main computer,...but for all those old dos and windows games for the grandkids, I use an older windows. Got wine on the Vector box, and can run some nice win games on it for the kids, as well.
EDIT: The Nvidia card I have in the PIII W2k box is a ...Geforce4 Mx 440 AGP8x. Had to use an older driver for it. But it works really well.