Thunderbird 3 installed without a hitch, and I worked out that I can download a nightly build of Lightning, there seems to be an add-on that automates this task.

I cannot find a version of Provider for Google Calendar, that works with Thunderbird 3 and the Latest Lightning.

Is it possible that I am just looking at the wrong place? (The latest build that I think I found from ftp.mozilla.org is 0.6pre and that does not seem to be compatible)