Zip disk files corrupted

I recently mounted an Iomega Zip100 disk that was created in 2002 on a G4 under OS X something. Most files are OK, but several of the directories are corrupted and system thinks they're Unix executables and not directories. Icon in finder is a little terminal, and an ls -l command in Terminal does not show the initial "d". How can I change "-rwxr-xr-x@" to a directory so I can read the files inside?

Try changing the Finder preferences to show extensions. Log out and log in to restart Finder (or use Force Quit to relaunch Finder). See if those misbehaving folders have a .something extension. If so, remove the extension.
OR... If you do a right (control) click on the file in Finder, does the contextual menu show +Show Package Contents+ ? If so, select it to see if you can access those files inside.

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