What are you going to do with the PC?
Btw network cards are onboard, so that is a waste of money. Onboard sound is pretty good (obviously, if you are going to use the pc for recording music, you will want a sound card.)
If you are not overclocking, get the cheapest PC3200 ram you can find, it will not make a difference.
If you are gaming, get the 6600gt.
I would change the 40gb to a 80gb, as it does fill up with XP.
Who makes the mobo in setup 1?
I hope they are both venice cores.
Cisco CCNA, Comptia A+, 1/3 through CCNP