How do I put downloaded movies on to my kindle fire hd?

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http://forums.androidcentral.com – Hi all, I recently got a Kindle Fire Hd for Christmas, however I am unsure how to transfer movies off my laptop onto it. I have tried transferring directly through a USB port and have also tried through the cloud. I don't know whether the files are in the wrong format and may need converting, if that is the case, could anyone recommend any suitable software? Also, any general advice with regards to maximising my Kindle would be much appreciated, thanks :) (HowTos)