Hi Carly. As you probably have reasons for using such “ancient” technologies like CRM 4.0 and LCS I’m just gonna go straight to the point. 1. Install a new instance of CRM 4.0 to the same “Rollup” level as your current content db is running now within your new clean AD/forest. I assume your setting up a new SQL with the same version/update level. 2. Inactivate the Organization in the old installation via Deployment Manager. 3. Make a backup of your _MSCRM content db and restore it to the new SQL instance in the new AD. 4. Perform an Import from Deployment Manager on the new CRM 4.0 installation. If you haven’t missed any customizations(.dll) from your old installation it should now be setup and working in your new domain. Best regards. Philip