^ Well, I guess that's a decent deal... 4GB of ram ain't really worth it, for me, I'm running under XP, but if you're going Vista, maybe it's another story, but if you are going XP I'd just get 2GB at almost half or less that price, and good RAM at that:
NCIX.com - Buy Crucial Ballistix PC2-6400 2GB 2X1GB DDR2-800 CL4-4-4-12 240PIN Dual Channel Memory Kit - BL2KIT12864AA804 In Canada.
Overclock em to 1200MHz @ 5-5-5-15 timings, 2GB is more than enough.
Plus you can take the extra money and get the Tuniq for better cooling and overclocking justice.
I know the PSU is cheap ($40 with MIR) but it seems a little iffy to me. I'd go with the 520HX or VX-550 for something that you will definitely not regret.
Actually, just don't buy from NCIX even, I find their shipping costs suck to the max. Give me a minute to build you something similar from somewhere else.