Set up is easy.
Research...well, we'll do it for you.
Support...go to www.computerforums.org
There are many guides out there that teach you how to build computers. It's not too hard. Main rule is, if it doesn't fit, then it doesn't go. Depending on the company your costumer service might be better off here. If you have any problems or if you get something DOA, all you have to do is RMA. It will take a while, but it would take even longer and possibly cost you if it was name brand.
Give us your budget and we'll get something for you.