What is the easiest way to start over? Just start with a fresh build and delete the old one? In that case what is safe to delete?
What is the most kid friendly skin? I dont want the kids to mess up things all the time, so i would like to have it simple. I know about the masterlock, but it would be nice with a kid friendly skin too

Any other good hints for this? It wont be connected to the internet, and the movies will be on the internal HDD. I believe it is a 320GB Seagate disc in there.