Before you perform this procedure, you must create the upgrade definition files and custom site definitions. For more information, see Develop new custom site definitions and create upgrade definition files (Windows SharePoint Services) and the Windows SharePoint Services 3.0: Software Development Kit (http://go.microsoft.com/fwlink/?LinkID=72207&clcid=0x409).

1. Save the upgrade definition files to the %COMMONPROGRAMFILES%\Microsoft Shared\Web server extensions\12\CONFIG\UPGRADE folder.

2. Save the custom site definitions to the %COMMONPROGRAMFILES%\Microsoft Shared\Web server extensions\12\TEMPLATE\SiteTemplates\NAME folder, where NAME matches the site definition name (for example, ACTION). Name the new folder using all uppercase letters.

3. Save the Webtemp.xml files for your custom site definitions to the %COMMONPROGRAMFILES%\Microsoft Shared\Web server extensions\12\TEMPLATE\LCID\XML folder. Name the files WEBTEMPNAME.xml, where NAME matches the site definition name (for example, WEBTEMPACTION.xml).

4. You might need to reset Internet Information Services (IIS) to recognize the new site definitions. To reset IIS, run the following command on the command line:

   iisreset /noforce

5. If you have a server farm, repeat these steps for all servers in your farm.