I have been impressed with the expertise in this forum before, but I am not sure if what I am asking now is even possible..

What I want is to make a drop-down list where the alternatives is all the filenames in a dropbox folder. The filenames must be updated and this must work regardless of which computer you are on. So the references must be relative (the document is also on dropbox) or it must refer to the shared folder link.

I will be both very amazed and grateful if anyone can help me with this!