Got a new BB9780 which of course comes with OS6, this OS is a big change and not one I like, I have told that a downgrade to OS5 is not possible for this device. I would like to have Microsoft to Go, so I can view my work file excel, word, also would like to view videos possibly of different file formats that I download, music mp3’s, etc. Where do I start with all of this because I have no idea what to do or how to do it? Please help.