The message does not indicate you require administrator privilege, but rather that the settings are disabled by the system administrator.
This means that security policies/group policies are in effect disabling that feature altogether.
The setting is under Administrative Templates->Windows Components->Tablet PC->Pen UX behaviors, and is listed as "prevent flicks".
of course, those are the English terms; I imagine they would be displayed in a German equivalent.
This setting was probably set by the preinstallation kit that the tablet manufacturer used to prepare the windows installation. Whether they had a reason for doing so would be another question!