WSS V3 has many new refinements, but putting it on SBS 2003 is something that has to be considered due to the impact. From the documentation, this is what it says: This is Version 1 of this document. To download the latest updated version, visit the Microsoft Web site ( http://go.microsoft.com/fwlink/?LinkId=77404 ). The update might contain critical information that was not available when this document was published. The Microsoft® Windows® Small Business Server 2003 server software (Windows SBS) deeply integrates key Microsoft business productivity server products, including Microsoft Windows SharePoint® Services 2.0. A new version of the Windows SharePoint technology, Windows SharePoint Services 3.0, is now available, and it provides enhanced features for your Windows SBS network. However, some of the differences between Windows SharePoint Services 3.0 and Windows SharePoint Services 2.0 break the integration between Windows SBS and Windows SharePoint Services. For this reason, if you want to install Windows SharePoint Services 3.0 on a Windows SBS network, you must install it side-by-side with Windows SharePoint Services 2.0. This leaves your existing http://companyweb Web site intact, and it also creates a new Windows SharePoint Services 3.0 Web site . When you install Windows SharePoint Services 3.0 on your server, do not choose Gradual upgrade or In-place upgrade. If you do, several Windows SBS administration tools will fail, and you might lose data on your Windows SharePoint Services sites. You must choose No, do not upgrade at this time, which results in a side-by-side installation. You must maintain your http://companyweb Web site as a Windows SharePoint Services 2.0 installation. Upgrading the site to Windows SharePoint Services 3.0 is not supported. After you install Windows SharePoint Services 3.0 side-by-side with Windows SharePoint Services 2.0, Windows SBS administrative tools continue to work properly with Windows SharePoint Services 2.0, but do not interact with Windows SharePoint Services 3.0. Windows...