If you are inquiring about 'split-screen' in WMM (Windows Movie Maker)... it's not possible.
WMM is a very basic video editing program with limited features. Other movie editing software you purchase offer that type of media manipulations, but not WMM.
Sorry. :(
Make a Video of yourselfUpload it
by buying video camera for computer and make a video and if your a member of you tube put it up
You cannot plagiarize yourself.
to make it look as if you are in the cartoon you can video your hands or yourself animating it by hand, super-impose yourself or find your own way by tinkering with software.
Well, I think that the best ways are: To make a video on Youtube To make a website of yourself To announce yourself on this website To ask your friends to tell people to be your friend
lots of video games!!
first you make a video of yourself saying who you want to prank then you send them the video at prankpartol.com then wait and see if you join the prankpartol
use a tripod
Be yourself and be funny, then post it on Youtube. Just express yourself.
Make a video about yourself and show you the real person and you will become famous. 
no he was not in labrinth's 'express yourself' video.
You have to have a Ipod that can tape videos or a video camera when you`re done filming a video you upload it to your computer then you have to sign up for youtube and you press "upload" and you go and find your video you recorded on your computer then click on it twice then there you go! :)