Adding Payments Due For Family Members In Query.

Hello,

I have a query that lists members who have outstanding payments. The results of this query are being used to populate a winword mail merge document.

The problem with this query is that if there are multiple members from the same family who owe then I will get an entry for each of them in my query results. What I would like to do is add the amounts due so that I only have 1 entry for that family. Additionally, since it is possible that more than 1 person can have the same last name and not be related I would also like to have the query check the address field and if it's the same than add the amounts due. The following is the sql statement for the current query.

SELECT Members.FirstName, Members.LastName, Members.ParentsNames, Members.HomePhone, Members.PaymentDue, Members.Active, Members.MemberDues, Members.FamilyAmount
FROM Members INNER JOIN MemberTypes ON Members.MemberTypeID = MemberTypes.MemberTypeID
WHERE (((Members.PaymentDue)=Yes) AND ((Members.Active)=Yes))
ORDER BY Members.LastName;

Any assistance would be greatly appreciated.

Regards,
Chris