the 965 chipset doesnt support sli or crossfire so go with the 975x chipset just make sure you got to a retail store and pick it up because only the new 975x motherboards work with conroe "Only versions of the Intel desktop board D975XBX with AA# D27094-304 or AA# D29532-303 or higher support these processors."
http://www.intel.com/design/motherbd/bx/bx_available.htm
there are 965 motherboards with two pci 16x slots but a little searching on the intel site will show you that 965 doesnt support sli or x fire
by the way the board version i was talking about was the intel version i like that one best it has 3 pci 16x slots two for sli and one other one for either a quadro or a physics card (i think there pci e) if you read this THG article http://www.tomshardware.com/2006/05/22/six_975x_enthusiast_motherboards_for_today_and_tomorrow/
you will probly like that one two
try to find a microcenter in your area i know they stock them and they have the best price right now (yeah better then newegg) i wouldnt buy that board online because you dont know what version they're sending you so if you cant find it at a local store then get the 965 but you wont be able to use sli but if your friend is loaded he can just get a 7950GTX2