Not sure how to explain this, but I will try my best.
What would like to be able to do is use my app which I currently have playing live video from my webcam, it captures video in avi, and also plays back avi files. But what I would like it to be able to do is act as a webcam itself so it would be selectable as a webcam source in IM programs such as MSN or Yahoo. Basically what I want to to is play a video in my program and have it broadcast over my webcam thing on MSN messenger. Any ideas how I might accomplish this?