Thanks for the help guys.
I just didn't know what else to do after trying single channel and it works but dual falls flat on it's face...
Hopefully I RMA the board and I get a replacement and it works like a charm. I'll be sure to keep you guys posted.
P5N32 SLI SE DELUXE motherboard
CORSAIR XMS2 2GB DDR2 800
Core 2 Duo E6600
OCZ 520w Modular psu