I need a desktop, but I cannot build it myself.

[buckslayer80]

There are tons of PC building guides out there that are loaded with pics. Building a Pc is really easy. But with prices as cheap as they are it might not be worth your time.

[pokergrader]

Building a PC is easy, but setting up the software and hardware correctly is more complicated than most computer people think it is. I dont think it would be worthwhile for you to pay somebody $100 to build the computer unless they also would offer you some support, which they probably dont want to do.

I am not up to date with which companies will provide the best product matching what you want, but I will attest that buiding a computer from scratch is a lot harder than just screwing the pieces together. Expect to spend at least 2-3x the amount of time required to actually build the computer setting up the software the way you want it.