I have multiple users on my home computer, but Windows Vista will not allow us the "switch users" option anymore. For a couple of weeks I worked from home, and my IT guys had me install a couple of software packages including a VNC software, all of which I later uninstalled. From then on, I had no "switch user" option. I tried finding an older restore point, but there wasn't one listed from before that time. I'm guessing a registry setting was changed that the uninstalls did not fix. Can someone help me turn the "switch user" function back on?