Yes there is such a device that will allow you to record from the composite av connections (red, white and yellow) to USB
A variety companies make such product (aka video-in capabilities or video capture) like:
Pinnacle Systems (http://www.pinnaclesys.com/ProductPage_n.asp?Product_ID=1885&Langue_ID=7)
If you are looking for an integrated solution ATI (www.ati.com) make such product called the All-in-Wonder series.
Is there such thing as a connector that would change one of those red, yellow, and white inputs to a usb?