SPLITCAM video clone capture driver software
From the site:
SplitCamera is a freeware virtual video clone and video capture driver for connecting several applications to a single video capture source. Usually, if you have a web-camera connected to your computer, you cannot use it in more than one application at the same time, and there is no standard Windows options that makes it possible. SplitCam driver allows you to easily multiply your web-camera video in any conferensing software like ICQ, Yahoo, MSN Messenger, or whatever… and to broadcast it to many users at a time. With SplitCam you can connect up to 64 clients to a single video source. In a few words: SplitCam does just what its name says: it splits the video stream coming from the video source and tunnels it to numerous other client applications.