okay, so there's this really cool program called openCanvas, and I've started playing around with it! It has networking ability and a few layers for each person. Give my a buzz on AIM to get the program if you can't find it. It's a simple .exe file called oC11b72.exe
EDIT: here's a
LINK so people can download
http://www.popnko.com/Emily/OC/pubmle011408.zip
http://www.popnko.com/Emily/OC/pubmlebtc011408.zip
sorry they're zipped, but if i left them with their original file extentions, they were undownloadable.