Thanks for your effort! However, the scroll lock AHK script seems to just open the properties window, which is the same thing that alt + enter does. I still have to select the appropriate tab and field for each file.
As you might have gathered from my "visitor" status, I'm pretty much a complete dunce with anything to do with code, even AHK or HTML (!) code, although I'm trying to learn. I searched around the interweb to try and learn something about the whole NTFS multiple data stream issue, and I'm afraid I was rapidly in over my head. Although this may be pointless technophobia, it seems that perhaps you can mess up your files if you're not careful? I don't know about that, though.
One thing I have come across that may be of interest or shed light, however, is:
A shell add-in/utility that adds an option to add a comment to a folder to the right-click menu in Explorer (uh, what is the right term in this context?), called Hob Comment http://www.dr-hoiby....CommentExt/index.php
. This will only work for one file at a time, though--it does not appear in the menu if you select more than one.
No idea how it was done, though!