what kind of a computer are you using? If you have a MAC you can use iDVDto create the movie....macam is pretty good. BUT I prefer this software its about $20 and worth it! You can do a lot with it.
http://www.evological.com/There are probably some PC versions you can find (search
http://www.softpedia.com for webcam software that can record)....If you already have the movie saved then you just need some video software to put it together. Again I'm a mac girly so I don't know what is best for video on a PC...but i can do a search and probably find it for ya...