I'm trying to figure out how to have one image span both monitors in vista, or at least have two different backgrounds for each monitor. anyone have any idea how i can do this?

Well theres ultramon, but wallpaper function doesnt work at me, it just get to look like:

But it should be fixed when UltraMon 3 comes out.. beside, it adds a taskbar to your second monitor to.. no transparency yet, but that should also be here in Ultramon 3 ..

http://realtimesoft.com/ultramon/