Thanks for the replies:
I signed up for the Hilton promotion, and rebooked a couple of future stays. How do I sign my wife up and stay in her name? Will they give me any problems during check-in if she's not with me?
I already have Hertz Gold, it's a huge time saver.
I want to concentrate on one program, which kind of limits me to the majors, although I too have heard that Alaska Air has a great program.
A couple questions I have is: what's so bad about Continental? I have about 20k miles with them the last few months. I have about 10k with AA. Should I hit 25k with COntinental and then ask American to comp me?
As to the credit card offers, I'm avoiding them, as I'll be buying a new house in 1 year and do not want to open new lines of credit. My corporate AMEX is fine.
Thanks again for all the input.