Amd am3 dual x16x16 sli ready motherboard

Hey! Need help. Want 2 build AMD AM3 3.0+ gig, DDR3x 4 gig+, (recomendation on manufact?!) Sli full x16x16, Preferably all Nvidia chip sets, twin Gforce 8800 GTS 640, audio doesn't matter. Would like good "Heat Sinking". Don't wantna have 2 upgrade in 18 months. Want it 4 games like EQ2, AION, etc. Thought about 800 watt, SLI ready PSU 2 drive it all. 80 gig sata drive is all that I'd need. Any recogmendations on board & CPU to get me started. Remember, I'm a simi-sinail old fart on a limited income.

Thanks