At the moment my computer specs are: M/board: ASUS P5VDC-MX CPU: Intel Pentium D 840 RAM: [unknownBrand] DDR2 2gb HardDrive: Western 320gb VGA: ATI RADEON 9600PRO PSU: 230W I want to upgrade the following, M/Board: ASUS P5N-E SLI or GIGABYTE GA-73VM-S2 CPU: Intel Core 2 Duo E8400 PSU: Antec Basiq 550W ATX Power Supply VGA: GeForce 8600GT PCI-E DVI-CRT-HDTV 256MB DDR2 [already have] Is this upgrade/build good? or is there other things to buy instead. i dont want to spend too much on upgrading only around $450 on my computer. Is there any other motherboards u recommend and any other upgrades should i do? Thanks