Amit K.
posted this on March 23, 2010 20:38
You should follow the instructions that appear on screen after you click "Create a new Google Calendar for this project" or "Use an existing Google Calendar for this project".
The URL that you are looking for can be found in your Google Calendar settings under "Calendar Details". You want to click the button shown below, then copy and paste the resulting URL into Manymoon.

Comments
It looks like this is now broken, by design- https://www.google.com/support/calendar/bin/answer.py?answer=163130.... Any help?
We're definitely looking into this. Will respond asap.