This might not work for your current trip (if you have already logged onto your photopass) It'll save a lot of money for your next trip!
There are threads on Dis (maybe budget board) with Dis'ers getting together and sharing the photopass. They get together with others going around the same time, and get all the card codes on before the expiration date. One person is in charge of buying the cd, and copies the cd to mail to the other people in the group. Try doing a search if you can't find it.