Yes, you can add additional ''Columns'' [with named identities on the tops] and additional ''Rows'' to your formed database
First have your data base opened up.
Now if you have No ''Grid Lines'' showing go to ''Tool Bar'' = ''Tables'' = ''Show Grid Lines'' =
To insert the ''Colums''/''Rows'' go to ''ToolBar'' = ''Table'' = ''Insert'' = ''Columns and or ''Rows'' =.
On the top of the Columns you type in the ''Descriptive Headings'' [The headings will appear when using the data base with mail merge]
It is important that before you carry out No.  below that you ''Save'' a extra copy of your data base!!!!!!
Possibly You may wish to print a hard copy out of your ?Data Base? [makes it easy to read] to show ?Grid Lines? This can be accomplished by going to = Toolbar = Format = Borders and Shading = Borders folder = can use = All or Grid = To verify that you have the Black Grid lines showing = Print Preview - Icon = After printing you must not forget to use the = ?Undo? Arrow = Alternatively, you [must] say No to ?Save? when you close the document as if you do not, you will loose your Data Base Setup and you will have to reconstruct it again!!
[The data base that is saved WITHOUT ''Grid Lines'' is usable, but if you have available only the data base with ''Grid Lines'' it will be a UNUSABLE data base!!!???]
If you would like to glamorise the data field document follow as below.
Make sure you have a extra copy/copies [by using Save/as] of the address data. Then try this = Have your curser flashing before the first character in the first field name and hit enter only once, go to = Toolbar = View = Header = and in the header field type in your Heading description. [The Header/Description will show as a mask] Now be extra careful do not alter the distance between the Header and the Document as it make the mail merge non-functional.
Please note I forgot to metion you it is possible you may be able to use a ''Data Base'' that has been formed with ''MS Excel'' and ''NOT'' with the with one formed with the ''MS Works Suite'' Data base]