Using the Perl modules I've created for parsing Jump Lists, I could see parsing the DestList stream from a specific Jump List, and using "find" to extract just the information about a particular file in question. You could then use Corey's technique to run that same tool across the previous versions of the Jump List files in the VSCs.
I like that approach - you could really use the beauty of batch processing to your advantage here. I'll have to mess around with this technique a bit...
Thanks for the words about my blog - glad to hear it interests you.