A link to the supported CPU's: http://support.asus.com/cpusupport/cpusupport.aspx?SLan...
The Q6600 B3 is supported since BIOS 0117
The Q6600 G0 is supported since BIOS 0608 (fairly new BIOS)
Where are you going to buy the motherboard and CPU from? Perhaps the supplier can confirm that the board will work with the CPU.
If the mobo doesn't recognize you cpu it will fail to boot. Had this problem with my crosshair and 6000+. They sent me a new bios chip, but they charge you shipping and will charge you if you don't send back the old chip. As far as customer service goes they should send you the chip for fre, especially when you drop 250bucks on a new mobo which you can't even boot.