You're right, 1.1 Beta 2 is only for Charter Members, sorry about that. (We're a Charter Member site.) The current public version then is 1.0.3, and I believe some spell checker fixes are coming in the 1.1 stream for you.
WRT copyright, I found this: http://www.simplemachines.org/community/index.php?topic=34184.0
Cheers
Mike