Thank you so much everyone, great information.
@etsnyd: good advice. While it does give me pause, I need to learn the skills. The big question was to start "easy" (Adams) and do Baker as a follow-up a year later.
@JHH60: I agree with you. The trips I am looking at are guided "expeditions" that are at least 4 days, and include a few days of pure skills while on the glacier. My intention is to do Baker or Adams in 2012, the other one the following year, and go from there. I would love to do a longer skills class, but I can't get away for that much time. I can do multi-pitch outdoor classes and climbing locally (east coast), but the alpine stuff I need to travel for. That leaves me to once a year basically.
@MountainJeff: awesome! I'm glad to hear I wouldn't be the only asthmatic to try it. I haven't had issues with it in years, it's just my inexperience at altitude that concerned me...but I'm glad to hear you haven't had any issues.
All the advice is great, I can't thank you all enough. I wish I could say that you all swayed me to one or the other, but it's just more detail to consider!!!