US Airways Dividend Miles (Pre-FlightFund Merger) - Dividend Miles Challenge

I'm currently a Silver Preferred member, however, I'd like to go up to Gold at least. In March, I've 2 round trips planned, 1 in April, and 1 in May. Now, one of hte round trips in March is on UA metal. If I decide to sign up for a challenge, would that count towards my segments/miles for the challenge? Also, what are the miles/segment thresholds for GP and CP?

Flights on UA would not count toward the challenge. Here is an online Challenge that is for addressee only:

Gold Challenge (http://www.usairways.com/dividendmiles/5038.htm)