Update: hey, I just discovered a truly amazing program which appears to provide control over practically any kind of meta data known to man. It's called ExifTool by Phil Harvey and it's Freeware. It runs command-line under Windows, Perl and Mac OS. There may be GUI versions, also. So far it seems to allow me to easily change Owner's Name, among other things. And for thousands of photos at a time. Awesome power!
Here's the URL:
http://www.sno.phy.queensu.ca/~phil/exiftool/#runningPhil Harvey rocks! And no, I don't know him personally I'm just helping to spread some good karma. Enjoy!
- Chris