If I were you I would go to the alienware site and get all the specs on the system you want (ie. motherboard, processor, ram) and just build the exact same piece of hardware for yourself. They will charge like 3,000 bux for a top of the line computer that you could build with your own two hands for around 900.

I know your thinking you don't have the skill to do it. Lots of people are scared of building computer by themselves but it's not hard at all. Search online for tutorials and do some research. Next thing you know you'll have a pimped out box of your own.