I borrowed this short-throw projector from work and hooked it up to my laptop and it worked out great. Took awhile to line up perfectly, especially because I was too lazy to use anything other than flimsy 2x4's on carpet to hold the projector up. To get everything lined up, I marked the center of the ceiling with tape, then moved the projector until the center of my grid crossed the center of the room, and then fine tuned it until it was straight along the edges. The projector image didn't cover the whole ceiling at once, so I did it in quadrants. For each section I went around with red, green, and blue sharpies and dotted the ceiling.