Where/How I can obtain passwords for BCP freerolls.

No, I'm not asking for them for free or anything, I just want to know what I have to do. I've learned how to trade points in for gift certificates, but I'm far more interested in the passwords for BCP.

I'll do anything. Well, maybe that's going too far...

edit: Is it the list of "opt in" and "buy coupon" tourneys on the main page?

Thanks