How to access the internal SD card from computer?

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http://forums.androidcentral.com – I just got the Galaxy S3 after being all Evo for years. My Evo LTE had too many issues to continue staying with. I still have some pictures that were not on the external SD card i had, but the internal one. Any way to get these to transfer to my new phone or back up on my computer? (HowTos)