Hi you all. I need help upgrading my computer so that it becomes faster and a better gaming system. My system is a sony vaio VGC-RB40. Here are the specs: Intel pentium 4 HT ~ 3.0 Ghz 512 mb of ram Intel graphics card but recently installed Nvidia geforce 7300GS OC graphics card 200 GB hard drive satta 7200 rpm 2 dvd drives ~ one only reads and one writes Motherboard Chipset ~ Intel 915G Express 1mb level 2 cache Please help. I really need my computer to go faster and work better in terms of gaming.