Pursuant to the valuable surround sound system information found here and here, what options do I have with regard to my projector? [+] I dumpstered a brand-new InFocus projector a while ago and have recently begun to think about how to build a semi-permanent screening area. The projector has great brightness and video quality but does not incorporate some of the home-theater features seen on newer models, such as masking the non-signal areas from the projection, keystoning adjustment, and fan noise dampening.

Ideally, I'd like to mount it to the ceiling and wrap it in a noise-dampening box, venting the heat probably into my attic. Do I have to roll my own, or are there systems out there to do this?

Finally, I don't need a receiver or DVD playback system; I do need speakers. Should I even bother with fancy options such as flat-panel or Bose cubes? Additionally, what's the deal with the hype around Bose Acoustimass systems?

Thanks very much for your nerdly expertise!