[TYPO3-shop] Assigning usergroups to new customers

[Leen]

Hi

When a customer buys for the first time, they can fill in the form with 
delivery and billing address, and they wil be added to the users in the 
assigned pid.
However there is no usergroup assigned to that user.

In the constants you can tell which pid to put the users but not which 
usergroup they should have.

Did I overlook something. Anyone any ideas