I need some assistance. I had a couple users pull a prank on someone here that basically wasted my time to fix it for them. They took a screen shot of her desktop and used it as the wallpaper. I thought it was great until I (as the IT person) had to waste my time to resolve the issue for her. I now want to play a couple of good pranks on their systems remotely for them. I was going to just change their wallpaper and block them from changing it remotely. How can I do this. I know I can change the NoActiveDesktopChanges key to 1 to keep them from changing their own wallpaper. I just need to know how I can remotely modify the keys in the registry to make these changes. I figured I can use the PSTools to do it. They are windows 7 machines I just need to know the commands.
Unless someone has a better prank to play on them to show them they should not waste my time again.