Well, I'm not building a computer but I want to replace my motherboard, because I only have PCI slots. I want to switch my motherboard, but I want to know what I need, do I just buy a new one and install it? So far I have heard that I need a motherboard, new CPU and what I basically am doing this for my new graphics card. This is what I've decided to buy.
Canada Computers - Motherboards > Socket AM2 : Asus M2A-VM Socket AM2 AMD690G + ATI SB600 Chipset Dual Channel DDR2 800/667/533 Integrated ATI X1250 Graphics Micro ATX.
Canada Computers - CPU > Desktop AMD Processors : AMD Athlon 64 X2 4400+ (65W) Dual-Core Socket AM2, 2.3GHz, 512KB x2 L2 Cache, 2000MHz HT, 65nm (ADO4400DDBOX).
Canada Computers - Video Cards > PCI-Express Cards > Powered By nVidia : Asus EN8500GT SILENT MAGIC/HTP/512M nVidia 8500GT Chipset (459Mhz) 512MB DDR2 (666Mhz) Dual Display PCI-Express Graphics Card.