"So to answer your question, yes, you do need the credit card you used to reserve the ticket so if you use several cards, make a note of which one you used."

That clearly depends on the airline . . we have flown Continental several times with e-tickets and did not need the credit card we purchased the ticket with. . only something that had my name eletronically . .

Rich

When I fly for business, my employer buys my E-tickets on mostly Continental and Delta. I've never had a problem using the automated check-in terminal to print a boarding pass with my own credit card. If I did have a problem, I would just have the ticket agent print one up.

Frances

If you can't get an answer here, try flyertalk.com. Lots of frequent fliers there who know just about everything, or so it seems, about mileage accounts.