Hi Trigger,
You don't say what revision the motherboard is (there are 4 versions) or how much RAM you want. Also, if you could update your User Profile (there's a link at the top of the page) so we know where you are in the world, it will be easier to point you in the right direction.
It is worth noting that if you want to run more than 2 sticks of RAM you will be limited to 800MHz RAM Modules as 1066MHz is only supported by 1 DIMM per Channel.