Good point roycruse. Don't underestimate the planning needed to get it right!
I assumed that I could put teh projector on a shelf at one end of the room with the screen on teh opposite side, but the image was waaaay too big and the throw not sufficient to get a clear picture form that distance. Also, think about how to route the cables to the thing, when its on the ceiling. The shorter the distance between teh DVD player and the projector the better.Long scart cables can be very expensive.
When looking at the spec of the projector, also look at the contrast ratio. My projector is 1200 lumens and 800:1 and you wouldn't want it any less sharp, but you could live with it being dimmer (eg circa 800 lumens and say 2500:1). A brighter projector in a light room doesn't need such a high contrast because you can't se the difference in quality, but in lower light levels with less glare, you can really see the difference.
BTW Roycruse, do you live in a seventies gentlemans club?