Budget Gaming PC/Compatability

I'm helping my little brother build a cheap gaming PC, but I don't know if these are the best parts for the price or if they are compatable. Right now it will cost $545 for the PC w/ vista and a 19" moniter.

AMD Athlon 64 X2 7750 Kuma 2.7GHz (w free game)

HIS Radeon HD 4670 IceQ Turbo 512MB (w free game) :D

GIGABYTE GA-MA770-UD3 + Rosewill Mid Tower Computer Case with 350w PSU combo

G.SKILL 2GB (2 x 1GB) 240-Pin DDR2 1066 (PC2 8500)

LG Black bezel 16X DVD-ROM 52X

Western Digital 320GB Hard Drive + Windows Vista Home 32 bit combo

Acer 19" Widescreen Moniter

Any suggestions or help are appreciated, than you.

bump

agreed with the above recommendation a 500watt is fairly cheap and will do world of good. if you dont mind scrap your current case and get an atop decorative case with matching keyboard & mouse (comes in cherry red, hot yellow, and black) to make the cost roughly the same.

bump

ok i switched somethings around...

Rosewill Steel ATX Mid Tower Case

GIGABYTE GA-MA770-UD3 AM2+/AM2 AMD 770 ATX AMD Motherboard

DYNAPOWER USA 500W ATX12V Power Supply

Would I need another 2 GBs of memory then?

Would I need another 2 GBs of memory then?

skatr1990

so whats the difference between 32 and 64 bit?