How can I install Skype in Knoppix?

[pastabake]

I finaly had success with this yesterday. Knoppix 7 seems far far slicker and any deb package seems to install. I don't understand how to use the dpkg command properly, I just added the following for Spotify and Skype respectively to my sources.list:

deb http://repository.spotify.com stable non-free
deb http://download.skype.com/linux/repos/debian/ stable non-free

then simply: sudo apt-get update

then: sudo apt-get install skype

it just worked!