Hi kraft,
Sorry, but I think you may be out of luck. No Codewarrior, no install. The only thing I could find via the oracle was this link containing:

>>I would like to write some perl scripts to do image resizing on Mac OS 9.

The only way to do this would be to use MacPerl in conjunction with my mac OS scripting port of a WAY OLD version of IM via AppleEvents.

Or, better yet, move to Mac OS X!

The person who replied to that thread has his email addy there, as a long shot you could maybe try contacting him? Best of luck anyway. :)