How to get my computer to see what my camcorder sees?

I want to be able to see what i see on my computer on my camcorder like a elmo projector please help!!!!!!!1

Answer: 
You did not tell us which camcorder. Most have an "AV out" connection. It is a yellow RCA jack at the end of the cable that came with the camcorder. Connect it to the yellow AV-in jack on the projector.