Nonetheless, I continued... setting up CSR to link to a new browser window. Everything seemed to work... clicking on an event brought up the event detail window with the CSR scheduler link inserted at the top. But when I clicked on that to schedule a reminder, all it did was open a new browser window with a totally new calendar view in it (a view I can't remember having defined anywhere) instead of the scheduler form.
Anylone have any ideas what is going wrong? I suspect the fact I didn't tweak an EventView link might be the issue.