Gah, now i'm confused. Hehe. So basically 400~ upgrade for 7800 GS and 1 gig of ram, or ~ 750 dollar upgrade for PCI-E mobo, 7900 GT and 1 gig of ram. Meh i guess i'll just have to think about it.
Edit: Alright, I think i've decided to go with the ~400 upgrade and save the extra 350 for my full upgrade in the next 6-9 months after Conroe and AM2 have come out. I'd rather have a motherboard with long term flexibility/upgradability than just switching from 940 to 939, especially since i have the money.
Thanks everyone.