[TYPO3-commerce] linking to fe_users

[Peter]

Hi All

I have a problem with linking commerce to front end users.
Does any one have a link that explains this.

My problem is as follows

When a first time user uses the shop they can add detail etc and
create a new FE user.

But when an existing FE user is logged in the address is not
displayed.

Where do I look to get the FE user data displaying in the shop?
thanks
Peter