private facebook group?

[Suze]

If you joined the group, log into Facebook and look at the bottom left of the page where it says Applications. Click the Groups button (two blue heads)

OR

click here: http://www.facebook.com/groups.php

Once you're on the Groups page, click the My Groups button in the top left to see the groups you're a member of. You should see a link to the group in there.

If you did not actually join the group, you'll either have to go into your notifications (http://www.facebook.com/home.php#/reqs.php) and see if it's in there. If it's not in there you'll need to contact the group owner to get them to re-invite you.