If you mean the team in the Team Competitions (in this subforum), they do still use the same team number. We pull out stats for individual clients by passkey, which means they can all Fold for OCN, but we can still separate their points and make teams.
As for an intro, it's made up of six positions; two i7 Folders, an X6 (or i5 2500k), a Fermi GPU, an AMD GPU, and a sort of mixed slot, where other CPUs/GPUs can fit in. Each member is allowed to fill only one position in a team.
The main barrier is the requirement; TC Folding requires at least 20 hours of Folding a day on your hardware (whichever you enter a team with).
Is there a page on here that explains the rules and requirements that I could check out?
There're a few stickies at the top of the forum you can check out. Any other questions can be posted here, and I'll answer them. :)