need to rent a projector

[tsuki-no-bara.livejournal.com]

the end of next month i need to (hopefully) rent a projector that i can connect to a laptop to project a powerpoint slideshow. the thing is, i only have half an idea what i'm looking for and no idea where to find it. i only know what it's supposed to do, namely project onto a wall or a screen a slideshow already running on a laptop. does this kind of thing have a specific name, and more importantly is there anywhere in greater camberville/arlington/etc that will rent me one?