Welcome to FlyerTalk
Gina2178! In order to better answer your questions we will need a bit more information.
1. What major airport is most convenient when traveling?
2. Which cc/airline/hotel programs would you prefer to retain?
3. To which (International) geographical area will DH be traveling?
questions 1 & 3 will help in identifying the airline programs better suited.
I realize it is late in the game but there is a gathering of FlyerTalker's (FTer's) in
Ann Arbor July 24-25, 2010 (click on 'Ann Arbor'). This get together (referred to as a
DO)is oriented towards maximizing mile, points, etc., from various sources. It is very educational and if you are unable to attend this year I am sure
Bikeguy will be organizing another DO for next year.
Have fun and travel safe.