I would immediately sign up every credit card I owned with the Idine program, each with a different airline. Then use each card once in an Idine restaurant and the posted miles will extend the expiration date of your account. If you only have one credit card, hook it up to one airline immediately, eat at an Idine restaurant once, then change the affiliation of the card to another airline and so forth and so on until all
your miles are covered.
edited to apologize for the repetition, the above posted while I was typing

[This message has been edited by Marysunshine (edited 07-25-2003).]