The SharePad workspace on GotDotNet has been updated.  It now supports getting/setting custom properties with every open/save.  If you want an example of how to use FrontPage RPCs, the URL protocol, etc., this one’s ready to go.

I’ve already mentioned that the Interlink Group deserves special thanks for building this to our specs and running down all of the implementation details, but I wanted to extend specific thanks to Bob Brumfield for doing the vast majority of the coding and research, as well as David Appel, who provided support, code slinging, testing, and validation.