Compatable Graphics card for Packard bell utow - d10 - dv100?

[cutehonebabe2003]

Im new to upgrade hardware.. and ive searched everywhere! but still can't find the answer.. i plan on using the graphics card for gaming..
Specs:
Intel Core 2 Quad Q6600 - 2.4ghz
Ram:3gb
Video card?:Intel express chipset g31/g33