At my church we currently have quite a setup, with four mounted projectors and four mounted projector screens helping the congregation follow along. However, sometimes we need to switch between programs on the laptop (using XP) that is used to power all four projectors. Currently what we do is press Fn + F7 to remove the projector as a source, navigate to the new program, launch it, etc. and then hit Fn + F7 again. The problem with this is that in those 10 - 15 seconds, the four projectors bear an ugly "No source found" image. A bigger problem is that for example, we are nearing the end of one song and want to switch to another. We want to get the next song ready for the projector, but at the same time we don't want to lose the current slide.
I was wondering if there was a way to "push" or stick the current image to the projector, and then when you're done you hit another key and it goes back to projecting whatever is on the screen. I understand that it might be a bit confusing but I think I explained it well. Thanks for any suggestions.