I've downloaded an iso file from one of the mirrors listed in the site and burned it onto a CD. [it's Knoppix 2.7.8 if I'm not mistaken]

When trying to boot my PC with it,the Knoppix seems to load successfully-recognizes all hardware etc.,then it announces that it will open a X session for user Knoppix and after this session is closed it will shutdown the system

Then it proceeds to opening a graphic screen with Knopix and "linux in use" splash screen and sort of icons which "light up" each at a time as things are being loaded[or so the text says.]

Then the graphic window closes,it goes back to the text screen -and proceeds with closing the system as promised...

Seeing as I'd like to work with Knoppix for more than 1 second- -how do I fix this ?[and what's wrong?]

Thanks in advance..