Help!!!! For An Entertainment PC

I need a PC with

horizontal case

accomodation for an ultra-powerful graphics card with HDMI

support for proper fan, power supply and such

ultra fast CPU (or thereabouts)

Vista Ultimate

from a reputable existing PC manufacturer

I'd have one built but I have no idea of the reliability.

I'd build one but I am too busy for it.

I'll buy all the other stuff aftermarket (if it's not included already).

I wanna play my PC games on my big screen and also want my DVDs on a server stylee.

I want my HTPC!!!

edit: ok if necessary I will build one (first choice isn't that though). It pisses me off that, from what I've seen, no mainstream manufacturer pushes HTPCs. I like a case like this but I don't need a screen on front

http://www.ahanix.com/images/product...e_mce701_l.gif

I would want multiple HDs versus one huge one. Total of at least a TB.

This might give you some ideas.
At the very least, it's an overview of the process.

I think you're gonna end up having to build it yourself.