I'll just add a few points I forgot to mention in the first post, ideally i would like it to be fairly quiet, I quite like the shuttle cases although I'm quite tempted by the look of the Lian-Li case suggested by S1ick.
Not that it makes much difference as most hardware is now geared towards 64-bit, but this build will be for Vista x64. And finally I wont be wanting to overclock this.
Jamauk