Superimpose

Need some help guys.

I want some decent software that has the capability of superimposing someone onto a video or still picture image.

So for example, if i have a cartoon movie on my computer, i then want to superimpose my son into this cartoon image.

Someone recommended me Adobe Premiere 9, but it's pants.

Anyone got any knowledge in this field?

I use Pinnacle Studio 9 and find it excellent. I've never done what you want to do, but you could always ask how to do it on their forum. http://webboard.pinnaclesys.com/read_forums.asp?WebboardID=1&SectionID=227&lng=1