dmorin's Journal: Can you project a scrolling LED display?

I've become intrigued with the idea of combining a projection clock ( like this ) with a scrolling message display like this). There is apparently a big hacker market for scrolling LED displays, but I want to go one step farther and have the same concept without the big ugly hardware hanging on the wall.

Can't quite find the combination of parts I need to start. I have to figure out what the technology is behind the projection aspect (i.e. can I make it project anything or just segmented LED?), and then whether it can be applied to a scrolling display (I assume that if I have n-char LED display and can refresh at a good rate I can scroll). There's a zillion kits that will show you how to drive an LED display from the serial or parallel port (such as a recent slashdot article shows). After that it should be easy. :)

Anybody got any suggestions?