it seems that tnt 2 driver from the nVidia site does not work on sp2. is there a way to make it work? i cant play games now because it doesnt work

no dude, this drivers working fine trust me, maybe do you have another problem but not drivers, I know because I have two graphics cards in my machine one gfx5200 agp and another pci riva tnt2 m64 pro and both working fine with 66.93 drivers, perhaps you need go to system bios and set irq for your vga card agp or pci try it first and after uninstall drivers, when system call for new drivers before installation you need close all applications principally anti virus and spybot right dude, and for games I believe you know about limitations in tnt2 for example this graphic card do not run doom3, call of duty etc and some old games really do not run in sp2 as castrol honda 2000 unfortunately even when disable dep, I hope help you