I am creating a mailmerge document where I am trying to attached all the
images in a specific directory to the document. All the documents in the
specific directory are randomly named files.

Example: I have a client file 12345 and in that directory there is a
directory called Bills (i.e. c:\12345\bills). I want to be able to have a
mailmerge document to be able to attach all the files in the directory
c:\12345\bills to the letter. The client file changes for each letter and I
know I can use a mailmerge field the do that, but can't figure out if its
possible to attach all the files in a specific directory in a client's folder
to the mail merge. Any suggestions?