yes for the e6750 get the AF7, its more than enough.. for the q6600 you need a Tuniq because it dispenses so much heat..... but i'm sure that the Zalman isn't as great as the Tuniq Tower 120...
well i haven't build a system in about a year... but but i got in trouble.. grades slipped.. so i'm back to p4 system
but for cases: go to Zipzoomfly since they have shipping for free
ClubIT: Get your q6600 from there... $266 is really cheap for an OEM one..
Newegg: for pretty much everything else