papa3 posted this promo (without the useful step-by-step guide or the household account information) in Buzz three days ago:
http://www.flyertalk.com/forum/Forum1/HTML/008305.html
but that thread was locked to consolidate ongoing discussion in the BA forum:
http://www.flyertalk.com/forum/Forum15/HTML/003177.html
Posting it here and spelling out the steps helps more people, IMHO, but it is always best to keep the moderators happy