Asus Eee 1015PEM - Need to change language - can't understand anything

I bought a new Eee 1015PEM yesterday. Charged the battery overnight. Turned it on this morning, saw the word Next at bottom right of screen and pressed enter (assuming it would take me into the desktop).

Wrong!!

Suddenly everything changed to oriental characters, and now it doesn't matter what keys I press everything is still in characters that I can't understand. I don't know how to get it into English.

This is my first netbook/laptop, so it is all pretty much a mystery to me.

Please help!