The only real forum in the message boards was...the LEGO Mindstorms forum, the old one restricted to only RCX owners who registered their product. Oh...it was a brilliant forum, excellent mods...who actually did allow links to other forums and Google and such...remember Blade?
Yeah, I even remember when everyone was allowed to post there, but we kept it secret. Actually, one of the ones that was on there was here, but... He just disappeared, though I think he's still on BZP... Remember Al?
And nonetheless LEGO unfortunately decided to wipe the forum clean, telling everyone that a new mindstorms forum would be made which hasn't been released yet to this day.
:-/ Wait, do you have an NXT Rahkshi? If so, is there any way to register it? If there is, try it, and see if you can...