When I press Ctrl+Alt+Delete, it doesn't bring up the task manager. Instead, it brings up a screen like this. It wasn't like this before. How do I fix it?
This is a result of your system being configured to allow for "fast user switching" under the XP operating system. If you are the only one using your computer, I would simply turn off this function which can be accomplished under the "user accounts" settings you will find in the control panel area.