There are some differences between recovering a ConfigMgr site and recovering SMS 2003 sites. The most notable of these is that the Recovery Expert Wizard has been discontinued and all the manual tasks from it have been incorporated into an improved Site Repair Wizard.
There are two ways to start the Site Repair Wizard:
From the Configuration Manager console
From the Configuration Manager 2007 program group on the Start menu
To open the Site Repair Wizard from the ConfigMgr console, do the following:
In the console, go to the System Center Configuration Manager Site Database Site Management [Site Name].
Right-click [Site Name] and then click Repair Site.