I've been toying around with the idea of building a computer from scratch for a while. I finally have the time to do so and have read as much as I can on the subject but without prior experience there's only so much I can know so I was wondering if people can give me some info. Below is a list of all the parts I've decided on but I just want to make sure that all the parts are actually compatible, as far as I'm aware they are but don't want to be spending a bunch of money on something that won't even turn on.

Case:
Luna ATX Case

Motherboard:
Gigabyte GA-880GM-UD2H / Gigabyte GA-880GM-USB3 (if i can get the latter I will but not found it anywhere in the UK yet)

Processor:
AMD Athlon II X2 250

Memory:
DDR3 SDRAM DIMM 240 pin 1066 MHz (PC3 8500)

Hard Drive:
Western Digital 160G SATAII 7200 rpm HDD (for now just as a starter)

Power Supply:
Artic Power 600w PSU



Optical Drives:
LiteOn iHOS104 Blu-Ray player

My question really is will all these components work together or are they incompatible? Any help would be greatly appreciated.

My plan was 2gb ram minimum. And I'll be installing Windows 7 (either home premium or ultimate as both are going for the same price in a local shop).
And as far as I'm aware the onboard graphics are sufficient enough to run 720p and 1080p video files and run WoW. I wouldnt be needing anything more powerful than that graphics-wise at the minute. Or would I still need a new graphics card just for that?

Thanks. I plan on using 64bit of Windows 7. How much RAM would you suggest for it?

Thanks for all your help. If I have any other questions I'll definitly come back to the forum.