I know the external SD card in the Xoom is read only, and you need a PC to move files to the card. Question is, once I move files, music, docs, etc to the card, how do I see them on the Xoom ? Example, Docs to Go, if I delete a file off the Xoom, but it is still on the external card, I cannot see that file in the documents area of DTG. What am I missing ? Can the Xoom read off the card, or is it currently just a pure storage device ? Where do I look on the Xoom to see exactly what resides on the Micro SD ?