I would be... does it have PC connectability?
Yes, it has a serial connector (9-pin). For my Win XP machine I purchased a USB-Serial adapter and connect via USB.
Is it an EXTENSION for a Palm, or is it a stand-alone unit that you can use with ABSOLUTLEY no other things?
This is an actual Palm unit along with the synch cradle that it came with. As stated in the original post, it needs an A/C cord to charge the unit ( a full charge can last more than a week of normal usage -- even more for paperless caching usage). So far, I don't have any other interested parties . . . but money talks!