Import a Package

1. Always make a backup prior to changing your system. Run the following command to backup an IIS 7.0 or above server:
       %windir%\system32\inetsrv\appcmd add backup “PreMsDeploy”
2. Open the IIS Manager by clicking Start > Run and typing inetmgr.
3. In IIS Manager, expand the Server node and the Sites node, then select the Default Web Site.
4. In the right-hand Actions pane, click the Import Application… link to launch the packaging wizard.
5. Select the package that you created in the previous quick guide, MyApplication.zip, or any other package.
6. In the Install an Application Package dialog, you will see the application and the database.
7. On the Parameters page, enter a new application name if desired and enter a SQL connection string.
8. Click Next to install the package.
9. The Summary page will provide a high-level overview of some items that were installed from the package. The Details tab will give a lot of detail of exactly what was added.

For more information go to : http://www.iis.net/learn/publish/using-web-deploy/import-a-package-through-iis-manager