help me choose a motherboard?

Im triing to make a pc for my friend but here is the thing. he likes playing games but doesnt want to spend lots. he also didnt even know what intel or amd were so he doesnt care. i cant choose a motherboard because when i built mine i just when *highest price* and bought the crosshair amd one. i will be putting 2gb ddr2 ram on it and an nvidia geforce video card with 512mb atleast. dont need agp slot. oh and socket intel 775 or am2 in amd any suggestions?
Answer
Amd used to be the same chips at like half the price companies that keep track of banking or something cannot chance a blip for gaming, its ok i think