Hi Sharonda, I have used both Sandisk and Kingston compact flash cards in my BrailleNotes. Those have worked well. as far as the size of the card, that would depend on how many maps you wish to store on the card and the cost of the card needs to be considered. What size did you have before? Chris On Tue, 9 Oct 2007 10:58:44 -0700, you wrote: >Hi everyone, >Sadly, I'm writing to report that my card with all my Sendero maps has >been lost. I know I can download all my information again--what a >pain. But what I want to know from more experienced users is what kind >of card should I buy? How many gigs and such? Thanks for all help. > >Sharonda