Star Chamber was a group of people (myself included) who were kind of like moderators of all the forums, but we were anonymous so you couldn't single out who was posting. Chewers didn't take to that very well and it was dismantled shortly afterward.
The "Elite" boards, nicknamed by us common folk, was a CHUD MB 2.0, created for those Chewers who thought the boards had denigrated into non-movie talk and whom wanted to have a "higher level of discussion". It basically became a popularity contest, and as Nick said, people who were members had to vote for you to be included. i don't know how the original members got to be there in the first place. I suspect their names had to be Devin and Andre. Many of the Chewer Elite have defected to another message board.
Edit: Just looked up that movie Chris, and yeah, I guess we were kinda like that. The boards were out of control and Nick couldn't oversee it all on his own, so he created the SC. I can't for the life of think of the group of people who dedicated themselves to destroying CHUD. They had a website and everything.