Dialectic integrates with iCal by allowing you to send the contents of the Notepad or of While You Were Out notes to iCal as either new events or new ToDo items.
Further, you could use iCal to remind you of important calls to be made with Dialectic and can even schedule iCal to dial Dialectic at a specific date & time by running an AppleScript that tells Dialectic to dial or automatically change the Location based on the time of day to ensure calls are made by the most economical method possible.
