I just bought a SanDisk 32gb microSDHC card to replace the 16gb which came with my Droid-X. I have explored it some using the Astro free file browser found in the Android Market. It seems that the filesystem is some form of Linux/Unix (EXT/EXT2/EXT3). How can I copy everything from the existing 16gb card to the new 32gb card using a Windows pc? It's one thing to read/write from/to the card from a Windows PC while the card is still in the Droid. It's another thing to read/write from/to it while the card is mounted in a reader on the Windows PC. I am concerned about screwing up file permissions, privileges, the structure and getting all hidden files.