Can you add people than have hotmail on yahoo messenger? and also how can you change the webcam background?

Yes, but the functionalities like sending a file, setting an IM environment would not be available. I dunno how you can change the background of the webcam though. Havent tried it yet^^,
Can you add people than have hotmail on yahoo messenger? and also how can you change the webcam background?
Yeah you can add anyone on ur yahoo having hotmail account .....Changing the background behind a nickface for more anonymity is now available to webcam buffs with AV Webcam Morpher 2.0 (AV WCM2.0).