for 300$ though the resolution is shriekingly small, it gives you something to consider with bigger monitors and projectors http://www.tomshardware.com/howto/20041113/index.html check it out
I read that a few months ago, its a very good way of making a projector with the main advantage the low cost as well as the low cost of the lamps! The quality looks very good, if you got some spare $$$ and time I'd have a go at it.
