I am in the need of a video card but I have a limited budget for it. I have narrowed it down to either the Matrox G400 Dual Head or Guillemot GeForce2 MX, which are both about the same price. Which one is better for occasional gaming like Q3, Rogue Spear, etc... Any suggestions would be greatly appreciated. Thanks!!

Asus A7V
AMD Duron 700mhz
128Mb 133mhz
Maxtor 20G 7200
Samsung 700IFT 17"