If you are running Internet Information Services (IIS) 6.0 in IIS 5.0 isolation mode, you also need to configure application identities for IIS 5.0 isolation mode. On your Microsoft® Windows® Server 2003–based server running in IIS 5.0 isolation mode, configure the application identity to the same settings as were set up on your server running IIS 5.0. You can do this by modifying the identity property of the COM+ object created for the Web site.
▸ To configure Web site and application process identities in IIS 5.0
In the Run dialog box, type mmc, and then click OK to start the Microsoft Management Console (MMC).
If the Component Services Snap-in is not already loaded, on the File menu, click ...