You could just add a second GTX 260 instead of using the stepup program. Wait for benchmarks when the GTX 295 is out and then decide what's best.
Add a Noctua NH-U12P cooler (the LGA1366 version).
Wow! nice upgrade! *jealous*
Don't forget a 64-bit OS, or you'll only be able to use about 3GB of the 6GB. Don't laugh, I've seen quite a few people do it. I thought the 32-bit RAM limit was pretty common knowledge by now, but I always mention it just in case.
yep very true although I think vista sucks and I still prefer to use XP dont know about other OS's