Well, your MB does support the CPU, but yes it's not a great fit. The CPU support sheet implies it only supports the CPU at 800 FSB... not sure but I'm guessing that would be 200 Mhz. If your CPU is limited to a 9x multiplier that could be bad.
Any modern MB will work fine. I like the ASUS P45 or P43 line myself.
P5Q Pro is a good choice, crossfire or not.