I don't have all the version details, etc., but I am
hoping someone may recognize the problem based on this
description.  A Visual Basic application that creates an
invisible instance of Word to perform a mail merge works
perfectly if the merge is done to a file, then the file is
opened in Word and printed.  If the merge is done to the
printer, parts of the document will print on top of other
lines as if the wrong printer driver was being used.  The
same main document is being used, same data source, and
the same printer.  The only difference is the merge to
file vs merge to printer.  Thanks in advance.