Microsoft has announced a vulnerability on computers running Internet Explorer on Windows 2000, Windows XP and Windows Server 2003 that can allow malicious software to access your computer when the F1 key is pressed in Internet Explorer.  When browsing an infected website the use will be prompted to press the F1 key for help with a non-existent error on the web page.  When the F1 key is pressed it activated the Windows Help system in Internet Explorer, the Help system has been found to allow malicious software code access to the computer.  As of today there is no security patch available to repair the vulnerability.