Store with forum?

Are there any store scripts (such as OScommerce, zencarts, ect. ) that can be integrated with a forum, especially the registration/memberlist part.

I'm going to have a store, but I also want a forum, and I don't want to make them register twice.

Any ideas?

Integrate it yourself

Get ASP Playground pump the Store you have through onto the same system put it under the same Web.config and the Registration System will be the same. Then you link the Store in with the Database in the Forum, add the required Columns and Tables if need be and you're in. You'll log in and log out through the system you use for the Forum for the Store.