You can run the CET tool, "Configuration Object Editor", from the command line. Once the CET opens go to the AppAdminSetupConfig container. Click your right mouse button the line in that container, and go to Properties. You then see a line that says, "Setup State: "DONE", Change the "DONE", to "FRESH_INSTALL", click ok and launch the AppAdmin page. Now you can log in with the ID Administrator, and the default password ciscocisco.
http://www.cisco.com/en/US/products/sw/custcosw/ps1846/products_tech_note09186a0080893b64.shtml#repeatcluster