Like I've said in other posts, you shouldn't even really be developing anything serious with the CLDC reference implementation for the Palm,
you should target the MID and PDA profiles instead. However, those are definitely not Palm-specific profiles so it's not sure how you'll be able to invoke Palm-specific features from there... but avoid the CLDC reference implementation!
Eric
------------------
Eric Giguere
author of:
Java 2 Micro Edition : A Professional Developer's Guide
PalmTM Database Programming: The Complete Developer's Guide