This is a good choice:
http://www.newegg.com/Product/Product.aspx?Item=N82E16814161227

 

forgot to say this a DDR or can use a DDR2 graphic card also?

 

Yes you can, it all depends on your budget too

 

What is your PC system specifications.

Dell HP ?





Windows Supported Video Cards
NVIDIA GeForce series

FX 5900, FX 5950
6200, 6500, 6600, 6800
7200, 7300, 7600, 7800, 7900, 7950
8400, 8500, 8600, 8800
9300, 9400, 9500, 9600, 9800
G100, GT 120, GT 130, GTS 150
GTS 250, GTX 260, GTX 280, GTX 285, GTX 295

ATI Radeon™ series

9500, 9600, 9800
X300, X600, X700, X800, X850
X1300, X1600, X1800, X1900, X1950
2400, 2600, 2900
3450, 3650, 3850, 3870
4850, 4870

 

compaq presario SR1123WM it only has 3 PCI slots
PC2700 256
40gb harddrive

 

it is retarded. i have a hd 3450 and i can get good fps, but because my vista runs 2.2ghz it isn't enough and it lags like a fag