Motherboard Question

Yeah, the P45 motherboards are defiantly nice.
If you decide to get one (which would be a good choice) at least go for the next model up from the previous link.
The P5Q PRO gives you a second PCIe 16x slot so you have the option of upgrading go CrossFire at a later date. As some may point out, this will limit you to 8x bandwith per card but remember, it is 8x PCIe 2.0. That will give both cards the same bandwith as the single card on your P35 based Mb as PCIe 2.0 doubles the bandwith.