I'm surprised this isn't mentioned in the post, but is this for an English Version or a German version?
It defaults to both a German keyboard map and German for all dialogs & menus. Like pureone had mentioned, this can be changed to US English at boot up by using:
knoppix lang=us
where the '=' is done with SHIFT + 0

I have already hexedited and created a fully default US English version of this 3.8 ISO file. If anyone is interested, the process for hexediting the ISO is described here http://www.knoppix.net/forum/viewtop...?p=78397#78397. The hexedit allows me to edit the /boot/isolinux/isolinux.cfg file. I searched & then replaced every entry of lang=de to lang=us.