I have a bit of a puzzle that I hope someone can help me with.  I believe
this can not be done with Word / Excel, but maybe someone knows a solution,
or knows a third-party add-on that would do the trick:

I have an Excel spreadsheet with mail merge fields, and in one column I was
thinking it would have the filename of the Word document to merge with.
Ideally, it would pick a template, and merge with that document.  So,
basically, I want to do a mail merge from Excel into multiple Word
documents.

I am aware of the ability to use AutoText / IncludeText to hardcode
mergefields into "Letter1" and "Letter2" in a document.  But, that will not
work due to variety of Excel documents that will be used and the varierty of
templates that are being merged to.

If anyone has some ideas, it would be very much appreciated!

Thank you.

jp