try,
SELECT count (Contacts.Name, Contacts.Address1, Contacts.Address2, Contacts.Town, Contacts.County, Contacts.Country, Contacts.PostCode, Contacts.Telephone, Contacts.Code)FROM ContactsWHERE (((Contacts.Address1) Is Null) OR ((Contacts.Address2) Is Null) OR ((Contacts.Town) Is Null) OR...