Many thanks to Stubear! Your advise provided me with the clue to fix my broken addressbook and datebook programs. Although restoring the .qm files alone did not fix them, I extrapolated that I could also symlink the .bin and .so files from the QtPalmtop.rom directory over into my home directory.
For those other new zaurus users out there who might be having problems with their preinstalled Sharp ROM addressbook and datebook after installing other 3rd party software, please note that you can restore these programs to their pristine, original condition by either copying or symlinking the files from the QtPalmtop.rom directory. Thanks again!