I have been using the Kindle Collection Manager which can be found here:-
https://www.mobileread.com/forums/sho...=94261&page=16
If the registration isn't successful for you then post #226 has a megaupload link.
Also there is a bit of explanation at post 245 that summarises all the previous posts so you don't have to go back and read them all.
Brewjono.