Outlook 2003 profile not created with ImportPRF

[Nils]

Scenario:
User logs on
Logon script checks if a mail profile exists, and if not deletes the
First-Run and FirstRun keys and sets the ImportPRF key.
User starts Outlook for the first time. Office will generate user-specific
settings like full name and initials and then the Outlook 2003 Startup wizard
starts.

I follow the registry during this process, and notice that as Office
generates the user-specific settings the ImportPRF registry key is deleted.

I just don't get it..... what am I doing wrong?