Yeah Dell bought Alienware a while ago. They aren't really bad, but just overpriced. Dell has been reported to have a couple of CPU and power supply issues though. However, Alienware's tech support is good (in europe at least).
If you know anyone who's actually following up on computers have him build your computer online for you. If not, try to be more specific as to what you need. I guess you want to play games, but what sort of games? What's your budget? For how long do you want the computer to allow you to play high end games etc...
Do NOT take random people's advice though. Right now I'm totally out of the loop because I haven't been following up for over a year, but watch out for random advice.
On a final note, if you don't know exactly what you need, that probably means you don't need anything very specific, so don't sweat it too much.
Good luck

(yeah I know, this wasn't a very helpful post

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