$Id: google.txt 1786 2008-02-28 14:52:01Z mjs $
There's probably a better way, but if you select "View in Google Earth", and view the downloaded file, you'll see an encoded URL like:
http://maps.google.com/maps/ms?ie=UTF8&hl=fr&msa=0&msid=101666581206004387592.000442c08faf7f5a58504&output=kml
Convert & to &, and paste into a web browser. You'll get an XML file with sections like:
https://www.google.com/accounts/RatePassword?Email=mjs@beebo.org&FirstName=&LastName=&Passwd=example