Recommend me a mobo?

Hi,

I'm looking to upgrade to a phenom II x4 955 and maybe juice it up slightly. I'm not making a completely new build, so I'm looking to carry over my ram and video cards for now, and wanted for some advice finding something compatible.

I'm running an Athlon X2 5000+ BE right now on an Asus M2N-SLi Deluxe with 8800gt 512 mb in sli and a soundblaster x-fi xtremegamer card. my psu is 730 W, and I have 4 gigs of A-Data ddr2 800 ram (4 1 gig sticks, 2 sets of dual channel)

What mobo should I get that would let me use my 8800gt in sli still? I was looking for options that had AM3 and SLI but I couldn't really find much. I'm assuming it's a really bad idea to try running Sli on the crossfire boards