Dispite what people say nvidia support Linux very well however, I would recommend a VIA chipset over nForce in Linux, the a KT400 is spot on and nice price/speed in Linux.
See my SIG below, Linux runs extreemly well and games run equievent to Windows. i.e Quake3, UT2003, Tribes2, FAKK2 in Linux.
Hope this helps.
AthlonXP 2600+ / nForce2 Asus A7N8X-X / PNY GeForce FX5900 Ultra / 1024Mb Samsung Ram /nForce Sound / Hansol 920D Plus 19" monitor / Lite-On 32x12x40 / 2x Maxtor HD 40Gb/80Gb / nVidia 7174 driver / Gnome 2.10.1 / Kernel 126.96.36.199 / Slackware 10.0