Thanks a million everyone. My TA did the trip for me on UA. I have since called CO 6 times, the prices for the same route varied from $900 to $4,400, and sometimes, we don't fly that route. It is apperent that CO res agents are not well trained when it comes to issuing tickets on NW and America West. One agent actually told me I could not fly on America West unless it had a CO co chair flight number. I think I am done with CO and will just stick with WN as prime and DL as backup. I tried!