To explain the title, I'm looking to build a computer for my mother/brother. Focus would be on a snappy computer that can run basic games like unreal tournament and handle word processing, navigation, facebook...etc. Possibly other modern games as he grows up. They don't need a powerhouse PC, but something nicer than this 5 year old sluggish dell 
I have basic knowledge and can build things on my own but I'm not current. I have trouble figuring out compatibility issues (ATX, ram vs mobo, videocard size...etc). What's your opinion on the following items. Please note I only need these things, as we will reuse certain things like keyboard, screen, hard drive...etc.
Must fit in this case:
Case: http://ncix.com/products/?sku=29812&vpn=THREE HUNDRED&manufacture=Antec
Motherboard: http://ncix.com/products/?sku=30765&vpn=P5KPL-CM&manufacture=ASUS
Processor: http://ncix.com/products/?sku=27784&vpn=BX80570E8400&manufacture=Intel ~~~~OR~~~ http://ncix.com/products/?sku=22211&vpn=BX80562Q6600&manufacture=Intel
RAM: http://ncix.com/products/?sku=24314&vpn=VS2GB667D2&manufacture=Corsair
Power supply: http://ncix.com/products/?sku=29136&vpn=RS-460-PMSR-A3&manufacture=COOLERMASTER
Video card: http://ncix.com/products/?sku=35551&vpn=EN9600GT SILENT/HTDI/512M&manufacture=ASUS
If you have a better suggestion for anything, please use this site to find the product. http://ncix.com/
Thing I'm not really sure about, motherboard mainly. Will a quad core work in this mobo? It advertises that it does, but I don't see it in the compatibility section. Also, will that power supply fit in the motherboard, (20 pin vs 24 pin?). I have a feeling I will need a different power supply for the video card, or at least an adapter of some sort.
Thank you for your time.
I have basic knowledge and can build things on my own but I'm not current. I have trouble figuring out compatibility issues (ATX, ram vs mobo, videocard size...etc). What's your opinion on the following items. Please note I only need these things, as we will reuse certain things like keyboard, screen, hard drive...etc.
Must fit in this case:
Case: http://ncix.com/products/?sku=29812&vpn=THREE HUNDRED&manufacture=Antec
Motherboard: http://ncix.com/products/?sku=30765&vpn=P5KPL-CM&manufacture=ASUS
Processor: http://ncix.com/products/?sku=27784&vpn=BX80570E8400&manufacture=Intel ~~~~OR~~~ http://ncix.com/products/?sku=22211&vpn=BX80562Q6600&manufacture=Intel
RAM: http://ncix.com/products/?sku=24314&vpn=VS2GB667D2&manufacture=Corsair
Power supply: http://ncix.com/products/?sku=29136&vpn=RS-460-PMSR-A3&manufacture=COOLERMASTER
Video card: http://ncix.com/products/?sku=35551&vpn=EN9600GT SILENT/HTDI/512M&manufacture=ASUS
If you have a better suggestion for anything, please use this site to find the product. http://ncix.com/
Thing I'm not really sure about, motherboard mainly. Will a quad core work in this mobo? It advertises that it does, but I don't see it in the compatibility section. Also, will that power supply fit in the motherboard, (20 pin vs 24 pin?). I have a feeling I will need a different power supply for the video card, or at least an adapter of some sort.
Thank you for your time.