the asus p5q pro is a great $120 mobo and includes heat pipe cooling:
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131299. (i own this mobo.) the p5q se plus is a good $100 choices: http://www.newegg.com/Product/Product.aspx?Item=N82E16813131347
the core i7 can take advantage of ddr3 but there's really no need to use ddr3 with a core2duo/quad. ddr3-1333 is barely faster than ddr2-1066 and only noticeable in benchmarks. 4gb ddr2-1066 cl5 is only $55 or so.
as for a video card, 512mb is now the minimum. you should be able to afford either a radeon hd 4870 512mb ($180), 4870 1gb ($245) or geforce gtx 260 896mb ($215).
I'm looking at building my 1st comp. My main objective is to build a mid range comp that can handle my gaming desires. I won't be doing overclocking or having any CPU higher then a Duo core 2 E8400 or maybe a mid range quad core. Graphics wise I don't think I need anything higher the 512 dedicated (I'm okay with 256 dedicated, but if there's a good deal for 512 dedicated I'll take it). My budget is $1200-1000 for everything including monitor. I'm debating if I want DDR2 or DDR3 memory (my price range for memory is $150-100). The only motherboard brand that I'm familiar with that has my price range is ASUS. I'm looking for suggestions for other brands people have used before, and specific motherboards people have used (that would fit my general specs) with pros and cons.