GErman to English Knoppix?

Hello,

My desktop PC has been having problems - multiple viruses etc - so i downloaded Knoppix (using another computer) so I could rescue the files from my hard drive. Knoppix runs fine. The problem is, everything is in German! This is even though I supposedly downloaded an English version. Can anyone help with how to change the language settings? I am sure I read about it somewhere but cannot remember where.