Yes, it can be easely done.
Push the scrollingwheel button on the left side on the bottom once.
Then you see a menu:
Parameters
Display
Soundoptions
Choose Display by scrolling down and push the scrollingwheel once
You see a new menu
Language*
Units*
Grafics*
Choose units by scrolling down and push the scrollingbutton once.
There you will see the available options.
* note I don't know the exact words because mine is set up in Dutch.
If you can't find it I'll have to change my language set up to help you.....