Hey guys and gals
I am running a live internet show every Friday night, and right now I am running the video off of my webcam on my Desktop (windows 7 ) Now i do have Ubuntu on my netbook (love it) and its version 10.04 (due to my wireless card i am not upgrading) And i was wondering if there were any good/decent/extraordinary programs out there that would do the following,

Picture in Picture
video sources (desktop, camera, picture)
and if at all possible stream an IRC chat on the video (kind of like chris pirillo does in his feed.)

If there are any programs that do all this and/or more please let me know. and please let me know how to get the program.

Now im not new to Ubuntu as ive used it since 5.10 was out so i know....the basics

thanks
Robert