OK, do you mean that you created this dta source from within Word's
mailmerge process? And the data source is not a Word document? If so, the
data source should be in a .mdb file which is an Access database, and you
would normally be able to edit it. However, these /mdb files have a very
specific format which, if altered, can prevent Word from editing them -
e.g., that can happen if you used Access to modify the .mdb. Are you aware
of doing anything like that? If so, is there any way you can revert to an
earlier version of the file without losing much data? If you are in a
position to do so, you are welcome to send a copy of the .mdb to me and I'll
see if I can connect and edit. (Despam my e-mail by removing the KillmapS).
If the data source is not a .mdb or Word document, things are a bit
different - let us know.