Only thing I would change is use a Seagate hard drive instead of WD. Seagates have a 5 year warranty and are more reliable than Western Digital, in my opinion. Although they are a tiny bit more expensive and a tiny bit slower. Nothing noticable. You can get a 250 Gig...Seagate Barracuda 7200.10 (Perpendicular Recording) ST3250820AS 250GB 7200 RPM 8MB Cache SATA 3.0Gb/s Hard Drive - OEM for about $75.00.
Also, you will get a better deal by purchasing a case / power supply combo instead of separate. You can't go wrong with Antec. There's a Lifestyle Sonata II with a built-in 450 watt SmartPower 2.0 power supply for $79 from Newegg.
Ya, every single hard drive that has ever fried on me has been a WD. And I've owned WD, Seagate, Hitachi, and Maxtor. Seagate is the way to go really.
As for case/PSU, the Antec Sonata II is a great choice, EXCEPT that the PSU won't be strong enough if you wish to upgrade your vid card and any other parts in the foreseeable future. Antec is coming out with a 500w version of the Sonata, but I can't seem to find a release date....so it's cheaper that way but not as good as your combo, or else you have to wait.