Originally Posted by
AquaDyne
Even when it does, you cannot redeem UAL miles for tickets on anything but UA flights (including United Express and Ted, while it lasts: it too is going away in 2009).
The major difference when CO is part of *A is that you may be able to earn UA miles on a CO flight.
You are mistaken, when CO joins up with *A, you will be able to redeem miles for CO flights, as you can for flights on any other member of the star alliance.
Whether there is availability, however...