Not to lower the tone with the whole overclocking, but I'm pretty sure that (the douche bag that is) Rob
has no intention of overclocking.
My second point to Rob is that a PC that can run BF2 may not be able to handle a new 2d version of lemmings by today's standards, you want to start thinking about getting a machine that is capable of supporting DX10
I'd be happy to help you build a computer though Rob, as long as you help me build a fort out of all the boxes at work!