How do you get split screen to work on Windows Movie Maker?

You have to have the Split Screen effect downloaded and installed on your computer (in the Movie Maker folder). Rehanfx provides instructions on how to get the Split Screen effect to work. I'd check out that site for more information on how to use it:

http://www.rehanfx.org/products.htm

I use Vista, and even though they say the Split Effect can be downloaded and installed on my system, it still doesn't work. I can download the installer and effect(s) alright, but can't get them to work in Movie Maker. But, that is with the Vista OS. Those using Windows XP shouldn't have any problem downloading, installing or using the effect.