prog for multiple input devices?

I don't know if there's anything out there for what i'm thinking, but here's what i'm looking for:
i'd like a program that will allow me to use 2 [or maybe more] mice and or keyboards. i think it would work best if it restricted one set to a particular monitor, but really anything would probably work ok. my idea behind this would be for manipulating progs that are runnning in the background of a full screen program like a game. or for games that support multiple players on one computer [like serious sam], you could have 2 or more people setup to play it. just an idea, anyone know of such a program?

Don't know of one, but it is a good idea if possible, and demand for something like it would be there.

Don't know of one, but it is a good idea if possible, and demand for something like it would be there.

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