Auto rotate is turned off as default(dont worry that caught me out too)
Go to settings,general, personalisation,display, and then you should get about 6 options? scroll down to rotate screen and set to automatic
Thats on my 95 , but your options should be the same or similar.
Also your 96 USB lead should also fit your 95? if your 95 hasnt got any options for screen rotate it means your firmware is old, the newer firmware included the screen rotate i believe