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Configuring Outlook user profiles by using a PRF file
You can use a PRF file in several ways to update Outlook 2002 profiles:

Import the PRF file in the Custom Installation Wizard or Custom Maintenance Wizard to specify profile settings in a transform, and then include the transform when you deploy or update Outlook.
Specify the PRF file as a command-line option for Outlook.exe. For example:
outlook.exe /importprf
\\server1\share\outlook.prf
Launch the PRF file directly on users' computers by double-clicking the file.
Configure the registry to trigger Outlook to import the PRF file when Outlook starts up. You can use the Add/Remove Registry Entries page in Custom Installation Wizard or the Custom Maintenance Wizard to deploy these registry key options to your users. You can also use the wizards to distribute the PRF file to users by using the Add/Remove Files page.
Delete the following registry key value : HKEY_CURRENT_USER\Software\Microsoft\Office\10.0\Outlook\Setup\First-Run.
In the HKEY_CURRENT_USER\Software\Microsoft\Office\10.0\Outlook\Setup subkey, set the value of ImportPRF to a string value that specifies the name and path of the PRF file. For example, set ImportPRF to \\server1\share\outlook.prf.