To help protect you against most viruses spread via attachments in e-mail, Microsoft has introduced a significant security enhancement for Outlook® 98 and 2000 — the Outlook 2000 SR-1 E-mail Security Update and the Outlook 98 E-mail Security Update. This security update provides protection from most viruses, such as the ILOVEYOU and Melissa viruses, as well as other viruses that spread themselves through e-mail, or worm viruses that can replicate through Outlook. This update limits certain functionality in Outlook to provide a higher level of security; it was not created to address a security vulnerability within Outlook. This update provides unprecedented security protection for Outlook and Microsoft encourages all users of Outlook 2000 and Outlook 98 to install the appropriate update for their version of Outlook. Important: The Outlook 2000 SR-1 E-mail Security Update requires that you first install Office 2000 Service Release 1a (SR-1a) (which includes the original Office 2000 SR-1 update and the Office 2000/Windows 2000 Registry Repair Utility). To ensure the integrity of your Office 2000 installation, the Outlook 2000 SR-1 E-mail Security Update requires access to the Office CD or your network installation location during the installation process. If you have installed more than one version of Office 2000 on your machine (for example, if you installed Office 2000 Small Business Edition and then later installed Office 2000 Professional Service Release 1), all of the installed versions of Office 2000 must be updated to Service Release 1 level before you install this update. If you are not certain, install the Office 2000 Service Release 1a (SR-1a) to correctly update your installations of Office 2000 before you install this update. For further information please view the author's homepage.