I would recommend that you don't root the Q5/Q10.
Rooting would invalidate the warranty. However, there are instructions here for the Q5, but I'm not 100% sure they'd work on Q10. http://www.futeko.com/newforum/index.php?topic=203.msg1417#msg1417
SD Card can be formatted to FAT32, NTFS, EXT2, EXT3.