Well, j, the method I used was pretty straight-forward:
i) load the files and select them
ii) from the Menu choose Options; then make ticked 'Extract - EXIF date (Photos)'
iii) for Auto Date (8) choose 'Mode - Prefix'
iv) Choose 'Type - Taken'
v) Choose 'Fmt - YMD' for name/date sorting
vi) (Perhaps put a space in 'Sep[arator] - ')
vii) Put a dash (-) in 'Seg.[ment] - -'
viii) Turn the century on with a tick in 'Cent.'
and
Harwood_Drake_House.jpg
becomes
2008-06-26 Harwood_Drake_House.jpg
And rather than do it many times manually for individual files, as you suggest, you can use BRU to do them all at once. Of course.
I had a look at your Amok utility and I found it a poor design. Those little data entry fields for, for example, "%d %p %M %date created" [the incorrect term] were just too awkward to persist with. No? And the fixed-width left-hand pane.. Copy Move Rename as radio-buttons..? Just unwieldy design.
Anyway, BRU does it now, I find.

Now to get EXIF data onto my scanned photo files.... JHead doesn't want to work in Vista..

Tags: exif data rename sort prefix jpg embedded extract metadata