I personally do not care for that mobo- ECS "KN1 Extreme"
. I would take the GIGABYTE "GA-K8NF-9"
I would also spend the extra cash & get the 939 Athlon 3200+
Hard drive- I like the 40 gig Hitachi
for under $50. It has decent seek times. Next, I would surf the Sunday ads for a 160+ slave HD. 160's can be had for as low as $50- so for $100 you can get 2 drives.
Why would I go Gigabyte? For a gamer it's a great board for the backup feature it has. You back it up after doing the windows install, drivers, main apps, Office- once he gets tired of the games or needs to reformat, reboot, hit F9, wait- it's like a new box. The bigger slave will allow him to back up any games just in case he decides to play them again. This is how we do it here, a small main with the bigger slave- much easier & more cost effective than a single 80 gig.
be sure to price grabber everything before committing to newegg.