Knoppix from HD: How use ISDN-config as reg user (not root)?

Hi, being new Knoppixer since last Friday I have managed to install CT´s Version 3.4 on my hd - works fine!

Except: I can´t access the included ISDN-config with my regular user account. After a click there´s some hd activity but nothing happens.

As root, it´s fine. Setting all kinds of rights on ISDN-config didn´t help.

So what am I missing? (remember, I´m a newbie...:oops: )

Best regards,
Jan Haberkorn