The data in your Access Database needs to be exported to a MS excel file, which in turn needs to be saved as a TAB DELIMITED txt file before it can be used by Easy Populate.

Before any more detailed help can be offered, it is necessary to know just WHAT the nature is (content and fields) of your Access database.

The data you wish to import into your zc store has to be compliant with the table and field structures inherent in your zc database, and also compliant with the structure of EP.