Steve: Are you running the latest version of both the Book Port Transfer and the Book Port Firmware? If not, then I would definitely update, because the latest versions are crucial to 4 gig cards. Some cards have switches that need to be set. If so, you might check that. Also, if nothing else, then format it on the PC. You'll have to use a card reader to format it the first time. Then, once you've formatted it with the PC, then you can put it back in the Book Port and reformat it with the Book Port. If that doesn't help, please let us know and we will get to the bottom of it. Sincerely, Pamela Rader, TECHNICAL SUPPORT American Printing House For The Blind 1839 Frankfort Ave. Louisville, KY 40206 PHONE: 1-800-223-1839, Ext. 307 >>> scullen7@xxxxxxxxxxxxx 11/15/06 04:22PM >>> Hi Everyone, I Just bought two four gig flash cards from deal ram.com. I tried to format them with my new bookport the bookport doesn't respond but when I put in my two gig flash card the bookport works normally. I tried hooking the bookport up to my computer and formatting the flash card through my computer but nothing happened. Also when I plugged in the bookport with the four gig flash card none of the bookport software loaded. I would greatly appreciate any help with this problem. Please feel free to email me at SCullen7@xxxxxxxxxxxxx Sincerely, Steve Cullen