Does anyone know of an image editor that would allow me to make a collage out of animated gifs?

Ok, this has been driving me nuts. I can’t even import an animated .gif (that I download) into Photoshop to edit it. I am wanting to do something similar to what you would see on a site like blingee, where you add animated .gifs over a still image. The thing is, I want to do this on a much larger scale, with hi-res photographs and low-res animated .gifs so
I need to work in a real image editor and not a web based tool.

Any ideas or tips?