Hi, I'm thinking about upgrading my PC, but I need some help deciding what the best course of action might be. These are my current specs: AMD Athlon 64 X2 3200+ Dual-Core Procesor Asus M2N4-SLI motherboard Nvidia GeForce 7600GS 512MB RAM 2x1GB Kingston PC2-4300 266.00 MHz RAM 550W Power Supply (Don't know what brand is it) I know I can still upgrade the CPU to an Athlon 64 X2 6400+ , but would it be worth it? Should I get a new Mobo/CPU/RAM instead? I have abour $500 to do this. It doesn't need to be a mega gaming PC, just something that plays games at a decent speed. Thanks.