hi
If you will use that pc just for gaming and dayly use DDR2-800 is enough there is no reason to buy a ddr2 1066, from the ones that you choosed i will pick the mushkin or the corsair.
since you are going vista 4gb is a must
I have some recomendations
, this is the way I think, but it is up to you
1-Asus Maximus Formula is not worth the money since it doesn't support SLI, at this point a p35 is a better idea, you loose the second pci-e 16x slot but as i said you won't need it if you go with nvidia GPU's
2-Pc power&cooling silencer 750w is more than enough power, it has better eficiency (you will save in the electricity bill) and it solid as a rock
3-Raptors are not a PLUS anymore, they are a bit faster than any 7200rpm HD but some of the newer HD are almost as fast and they give you more space, at Tomshardware there are diferent comparesions, i would recomend a samsung t166 500gb
4-since you are going Penryn the next year there is no reason to go with a quad core right now, at the moment any game is optimized for 4 cores, crysis is supoosed to be but who nows, a e6750 with a good oc is more than enough right now
5-NICE monitor I really like it
Hope it helps
and sorry for bad english 🙁

If you will use that pc just for gaming and dayly use DDR2-800 is enough there is no reason to buy a ddr2 1066, from the ones that you choosed i will pick the mushkin or the corsair.
since you are going vista 4gb is a must

I have some recomendations

1-Asus Maximus Formula is not worth the money since it doesn't support SLI, at this point a p35 is a better idea, you loose the second pci-e 16x slot but as i said you won't need it if you go with nvidia GPU's
2-Pc power&cooling silencer 750w is more than enough power, it has better eficiency (you will save in the electricity bill) and it solid as a rock
3-Raptors are not a PLUS anymore, they are a bit faster than any 7200rpm HD but some of the newer HD are almost as fast and they give you more space, at Tomshardware there are diferent comparesions, i would recomend a samsung t166 500gb
4-since you are going Penryn the next year there is no reason to go with a quad core right now, at the moment any game is optimized for 4 cores, crysis is supoosed to be but who nows, a e6750 with a good oc is more than enough right now
5-NICE monitor I really like it

Hope it helps
and sorry for bad english 🙁