So I have a Blackberry Storm that was having problems with it’s Mass Storage Mode. All the settings were showing that it should work, but for some reason, it was not. When I’d connect it to the computer, the phone wouldn’t show up in the “Computer” section, and autoplay wouldn’t pop up either. After quite a long time of searching, I found a forum which discussed and (with the help of Sri420 over at the Support Forums at Blackberry.com), I found a fix.
Click this link right here and follow the instructions!