Originally posted by: Davegod
I think most computer shops would only put together a PC for you if you bought the parts there, though some may do it if some of the parts are elsewhere (and some presumably even if everything bought elsewhere). Cost depends on the shop, though I'd assume they'd charge more for building if most bits are bought elsewhere.
Personally I'd rather do it myself, partially because
some PC shops er arent exactly very clued in, it can help you to understand the comp (or rather understand whats gone wrong if something does later), and it's kind of fun