The PSU's not bad, but I'd reccomend the first case on that list over the 2nd one because it has more fan mounts. You're giving up 1 bay, but so what, I say. You may have problems with overheating with only one fan.

Also, if you get a gig of ram (2x512mb sticks) make SURE you buy a dual channel kit. (It'll be both sticks of ram in one package.) Simply buying two of the same ram stick may not guarantee dual channel capability.

Other than that, case fans (~$5 a pop), thermal paste (~$4-10), good fan and heat sync (~$20-30), and a floppy drive (~$15).

What is it they say about silence being golden?