Hello.
I'm no expert at all but I can tell you what I know!
- 64 vs 32? The main thing you will gain from the 64-bit Vista is the no RAM limit. You can take advantage of the full 4GB instead of 3.5GB(?) in the 32-bit Vista. I'm pretty sure that 64-bit is the future and more programs will be optimized for it in the future.
- A 500GB HDD is well enough for a normal gamer. I have one myself with games and over 30 movies and 10 seasons of TV-series and I still have plenty room left.
Everything looks good to me and I've heard nothing but good things about the 9800 GT from my friends.
Let someone else tell you about the CPU's as I have no idea, at all.
