You need to take the plunge in to PC building at some point or another mate, why not start now? It's actually MUCH MUCH easier than it may seem if never have done it before.
For the most part everything is just click in to place, attach the power cables, screw down a few things here and there and that's it. Not much more too it than that if you wan't to look at it in it's simplest form.
If you wanted, one of us here could even write a step-by-step guide on how to assemble a computer from the ground up. It wouldn't take too long to write and would be a good guide for you to go from.
C'mon mate, build it yourself, we have faith in ya!!! :wavey: