You can change the location of the Root Folder where SVOffice2009 looks for your model files by:
1. Open the main project manager screen
2. Click on the menu "Options" then "Global Settings"
3. Click on the tab "Root Folder" then "Browse" to find the directory where you moved your model files to and select the appropriate directory.
4. Click on "Scan" to tell SVOffice2009 to compile a list of all the files in the directory.
5. Click on "OK"
Your project manager screen should now show all the projects and model files in this specific directory.