What OS are you running? If you are running win ME or 9x it may not be possible to kill the process with just ctrl+alt+del. Win 9x platforms don't show all the active processes, only a few. (The important ones are hidden) To get full access to all processes search on the net for "windows process kill programs" or equivalent. Then download one that looks safe. This should display all processes. Now kill the suspicious processes. (NEVER kill explorer or systray. Do this at your own risk.)