Sadly, no. I suspect some variation on Gutis' response might work with some tweaking. i.e., substituting some variation of "http://SD127:8080/..." for the physical path ("E:/CAisd/Documents/Knowledge/... ") SDM gives me.
The issue is NOT "How do I link something from a KD" nor is it "How do I add an attachment to a KD." The KD, complete with attachment, was created long, long before I started on this project. They're both there, the KD and the attachment. I want to hyperlink the attachment--which is already attached to the KD--from the *body* of the same KD it's attached to. When I "ask" SDM where the attachment is--so I can hyperlink it--SDM gives me the physical path--"E:/CAisd/Documents/Knowledge/... ." The part in this that does not work is ... the physical path! I do not want the physical path of the attachment, I want the url of the attachment. SDM does not give me the url, it gives me the physical path.
I suspect there is a way to do this. I'm closing in on it but haven't quite gotten there yet. Thanks for your responses.