I have a compaq presario. It's a couple years old and I am looking to upgrade the graphics card so I can play MOH Pacific Assault. I currently have the "Nvidia GeFroce 2 MX 100/200 64mb". 2.2 Ghz Pentium 4 processor 512 MB 266 Mhz DRam 1.5 v 4x APG slot I have looked at severeal of the Nvidia cards but I'm not sure which one will give me the best upgrade without touching the rest of my CPU. I'm not a huge gamer, but like playing all the MOH games. Please help.