The BES Transporter Tool is a free utility from RIM that is designed to enable the administrator to easily migrate users from one BES server to another, or from one BlackBerry Domain to another, ideal for administrators who intend to run their existing BES 4 installation alongside an upgraded BES 5 server for a period of time before then decommissioning the older server.

The installation is simply a matter of running the MSI file and following the on-screen prompts. An icon will be added to the Start Menu automatically. Launching the application displays the following screen:

The first step in using the tool is to create a new configuration document. Click on the New button, enter a name for the new document and click Save. Now the rest of the fields will no longer be greyed out.

Now you need to specify the source and target BlackBerry database instances. Click on the Configure button:

In the SQL Server field enter the name of the server holding the BES SQL database.
In the Label field enter the name of the SQL instance running on that server.
In the Database field, enter the name of the BES database, normally BESMgmt by default.
Verify that a connection can be established to the database using the specified authentication details.
Click OK. Now complete the same details for the target BES database.

Now you can select the users that you want to migrate. Click on the Details button. Click on the Find Users button to view the users available on the source BES. Select the users as required.
Click Close.

Click the Preview button to view a report of the intended operation. Be sure to read and understand any errors that are returned.
Provided that no errors are reported, click the Migrate button to begin the operation. Your user accounts will now be migrated.

For details on how to install the BES 5.0 software read this article - http://blog.brightpointuk.co.uk/installing-blackberry-enterprise-server-...