Er, if you're referring to Detonator 40 drivers, you don't have to. The drivers for GeForce and TNT are also detonator drivers. It's only version 30.82. The 40 series are all beta, so you shouldn't download them.

Recommended: download 30.82 here:
http://www.nvidia.com/view.asp?IO=win9x_30.82

If you want to use the beta file instead, download it here:
http://www.nvidia.com/view.asp?IO=win9x_40.72


As for compatibility, if the card is AGP (which is most likely the case), you won't have to worry about compatibility. Your motherboard has AGP, so it'll support it straight away. The only thing you have be careful with is the power supply. If you experience regular reboots or shut downs, it's your power supply. But the GeForce2 series aren't power hungry, so you'll be fine.