My apologies Woody, I finally understand the question you were actually asking...

When you select the audience for you export from the dropdown, you are actually selecting a predefined SQL query from the query builder table to select a set of data from the database tables.
In your case you want some data that is not contained in any existing entry, which means you need to insert an entry into the query_builder table that will return that data.
i.e. upload a SQL patch from admin that will create a new query, something like this:

insert into query_builder (query_category, query_name, query_description, query_string, query_keys_list) VALUES ('newsletters','My Address Export Query','Special Query for Customer Data Export','select c.customers_telephone, c.customers_email_address, \nc.customers_lastname, c.customers_firstname, o.entry_street_address as customers_street_address, o.entry_suburb as customers_suburb,o.entry_city as customers_city, o.entry_state as customers_state, o.entry_postcode as customers_postcode from TABLE_ADDRESS_BOOK o, TABLE_CUSTOMERS c where c.customers_newsletter = 1 AND c.customers_id = \no.customers_id GROUP \nBY c.customers_email_address order by c.customers_lastname, \nc.customers_firstname ASC','');

This will then give you a new entry in the dropdown list, which will return the telephone, address and postcode fields you were looking for, and you can then modify the export as necessary.

Rgds,

Chuck