Deploying a PRF File!

Hallo!
I have problem to deploy my prf file, its work fine with
the outlook.exe /importprf command. But i need to do this
in the registry. I do like this

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Set registry keys to trigger Outlook to import the PRF
file when Outlook starts. First, set the value ImportPRF
to the location of the PRF file.
For example:

HKCU\Software\Microsoft\Office\11.0
\Outlook\Setup\ImportPRF=\\server1\share\Outlook.prf
Then, reset the Outlook FirstRun key to alert Outlook to
process the PRF file.

To do this, delete the FirstRun registry value
HKCU\Software\Microsoft\Office\11.0
\Outlook\Setup\FirstRun, or set its data to 0.

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But this doesnt work the first time because Outlook need
a old profile? First time i start outlook i need to fill
in alla value.. But if i put same values in the registry
one more time its work...