k. nerds/computer geeks. i need some assistance here.
i was planning on upgrading my system. and since I'm not that familiar with all that stuff i wanted to ask for some help please ?!

i don't know what to get. what's good enough but won't cost me a fortune

intel i7 950
12 gb ddr3
win7 prof. (64)
gforce gtx 660ti

mainboard i have no idea what that is...i forgot....all i know is that i will need a new one if i'm going to upgrade

any help/suggestions will be much appreciated