OK. Found the regkey you need to set. I keep forgetting it 
Steps to follow:
Create a specific .prf file for your site including stuff like the home server and the user and so on. Environment vars are supported so just one default profile file is enough.
You can now copy the default .prf file to a location specific to that user. Something like c:\documents and settings\username\outlookprofile.prf or something will do.
In the HKEY_CURRENT_USER\Software\Microsoft\Office\[version goes here. 10.0 = office xp, 11.0 is office 2003, etc...]\Outlook\Setup subkey, create a string value called ImportPRF that specifies the name and path of the PRF file. For example, set ImportPRF to \\server1\share\outlook.prf.
A check at logon if the user’s .prf file has the same file time as the one on the server and acting on the outcome will ensure that your users will always have and up to date profile file.
We used to let prfpatch process the new .prf file to resolve all environment vars to the values but that is not really needed. If you really want to be on the safe side then you could included prfpatch.exe.
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Mart
- Chuck Norris once sold ebay to ebay on ebay.
