[kren]

Hi I am having great difficulty understanding the loading system both to the main device and the SD card in Mobipocket reader on my PC both drives show together so how do you assign different books to each individual drive also I have found on the main drive there are 3 files of the same book but on the memory card only 2 is that because I loaded the memory card via a card reader and not through the Gen3
I would be very grateful if someone could explain I've gone through the manual but find it lacking in examples
Keith