choose one or the other....if you are spending $1,200 on a pro card then get the Diamond FireGL2. it will be more than enough for your nurbs modelling needs. it doesn't have the fill rate of the quadro2 so games will not be so hot i'm guessing. here's what i would do. buy a pci gaming card for like $120 bucks and have them both installed. with that kind of investment it should really be a dedicated 3d system, but if you MUST play games then you were right with your first choice. the quadro2 pro will rule in games and will run pro apps really well as you get specialized drivers for all the 3d apps. i think you can buy one for like $850 now too.
Windows 2000
Abit KT7 non-raid
Duron 700@1000
Elsa Gladiac Ultra 64MB DDR
512 MB Corsair SDRAM
21" Sony F500
3DMARK 2000 = 7104