those processors dont come with integrated graphics, they are not like sandy bridge processors.
usually the motherboards have intergrated graphics, but integrated graphics are not good for gaming in the first place.
if you want to game then get a discrete gpu.
if you want to use a processor that is am3 that support ddr2, you will have to get an am2, am2+ and am3 combo mobo like this one:
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131595
ASUS M4A785-M AM3/AM2+/AM2 AMD 785G HDMI Micro ATX AMD Motherboard
but id suggest just going with ddr3 and an atx mobo.