hello!

i got an idea but dont know how 2 do it lol...
i want 2 create a "fake" device working as a webcam.
i mean, like on msn i can choose this "device" as the webcam and put videos for my friends to see, if u get me...
like i have another webcam but i can display w/e i want on it.
any ideas welcomed!

ps: i know this need a big messin and classes but plz try 2 help, it wuld b really cool and handy