I found a page with a promo code for 4000 miles:
http://thepointsguy.com/2011/03/up-t...miles-sign-up/
I entered it during sign up but didn't get a confirmation if it worked or not. As of right now, my miles say 0.
After my miles were created, I connected my already purchased ticket to my dividend miles account and inputted my US Airways frequent flyer number in there. I saw that I could put in my frequent flyer for another airline. Would that mean I would then accumulate points w/ that Airline? If so, I'd rather put my United in. I fly that much more often.