what motherboard do i need?

[egghed]

someone plse help!
I am building a pc and i have the intel core 2duo E6850, does anyone know what motherboard this is compatible with cos i got the ASUS P5B-MX/wifi-ap and it doesnt seem to work! the hard drive and dvd writer fired up but nothing on the monitor!!! i tested everything and the only thing left it coulda been was the motherboard!

i was thinking maybe i need to get the ASUS P5K3 Deluxe can anyone assure me this will definately 100% be compatible because i cant seem to get any answers from asus and i dont want to splash out loads more money on another incompatible motherboard.

also i presume my DDR2 ram i bought wont work with the asus p5k3 deluxe and i have to get DDR3 ,am i correct in this assumption?

thanks for any answers ppl