For Christmas, I bought my mother a Westinghouse digital picture frame. Never one to read directions, I inserted the 2gig SD Card I also bought into the frame, and plugged the mini-usb cable from the frame to my Powerbook. Both the card and the internal memory of the frame were recognized in Finder, so I began to transfer photos from iPhoto to the card. Most of the photos were visible in the frame. However, there were indications that many were not compatible, even though they were all jpg photos. I wondered if I needed to format the card for Mac (not thinking that then the frame wouldn't be able to read it)?! So I reformatted the SD Card for Mac, and, of course, the photos weren't recognized on the frame. I assume the only way to place photos on the SD card that the frame will recognized is to format it back to MS DOS. Does anyone have any other ideas or tips? Can I make copies of the photos on my Powerbook in a way that will ensure they are readable on the MS DOS formatted card? Thanks in advance. PS there are slots on the frame for other types of memory cards. Would there be a better solution there?