hmmm... You could set the No internet to be a guest and restrict their access to the internet. You could prevent them from accessing the run command, my computer, heck you can completely shut down their start menu, and force them to use only icons you set on the desktop. Then all you'll have to do is create a icon for shutting down the computer. Check out gpedit.msc and see what kind of things you can minipulate there. Best of luck to ya.