Which version of Word are you using, and what is your data source? (Are you
creating a new data source as part of your Mail Merge operation or are you
creating the data source first, then going through the Merge?)

If you are using Word 2002 or Word 2003, look for the "Customize" button in
the "Enter Address information" dialog box where you add/remove/edit
entries, and try using that to add these new fields.

--
Peter Jamieson
MS Word MVP

different data in each letter (the body of the letter) I need to enter a
total ( XXXX), paid to date (XXXX), and total due (XXX) BUT I cannot figure
out how to create this data source.