http://www.nitorix.com has border actions for photoshop called "borderit"-and they do have the filed neg carrier border- I'm looking to do the same myself...
the thing is, it's $150 with a few different borders-you can also apply them to a whole folder of images.
that's the only border I need from the collection-So, I'm trying to find a cheaper way-but I thought you may be interested in the link.
If anyone else has info I'd really love to know as well-
Jen
EDITED:
OOPS! I hadn't read your other post-saying you didn't want an action. This one looks really good though-considering it's digital- I miss printing it the REAL way, in a darkroom, with an actual filed carrier...