Without meaning to sound too snobbish, I'd say here. Whatever you're not sure about, ask here. There are too many conflicting guides out there, that while not necessarily wrong can easily lose someone the way.
Thats why I asked... I know there are a lot of conflicting things out there... I have only replaced something( take it out and put it right back in)... I have looked at the parts you have guys have suggested... If I get this stuff and then next year I want to upgrade to a quad do you just upgrade the chip and all is well? or do i need to get a power supply, board, Etc? Jig
As long as you get a decent power supply, going to a quad core won't be too problematic, assuming you have a relatively recent motherboard. If you're buying components today, they will easily allow Quad cores to be used later on with minimal fuss and minimal cost.
As long as you get a Gigabyte GA-EP35-DS3R and a Corsair 550VX you should be good in the motherboard and PSU dept. to upgrade to a Quad Core.