just thought i would share my backdrop system, which i really dig on.  i used to spend tons of money on rolled paper for my backdrops... i switched to vinyl rolls which is great, because, they roll or fold up easy, they don't wrinkle, if they get dirty, i just wipe them down with a spray cleaner and they are as good as new.  plus have you shot with paper?  it sucks!

plus when most of my shoots are done, my backdrop looks like this on the floor...not a problem ;-)  i get all my vinyl at fabric stores...