Hi! i´m new to linux so be gentle on me please...

A friend of mine needs to rescue some files from a messed up windows and i knew that knoppix could be a solution. I download it and run it from the cd with the help of a boot floppy disk, everything ok at this, it loads up with a nice desktop full of pinguins . The problem is that only one of my 2 cd/dvdrom drives works, the one which runs knoppix and can´t be opened. i´ve identified the other drive in boot sequence as hdd or hdc and tried to mount it over the desktop by right clicking -> create new device. It seems to mount it and i get that green mark of mounted device but when i click over it i get this error message:

dev/hdd is of the type FSDevice but has no dev=...

What does this mean? am i going the right way? i´m having lots of trouble cause i´m new to linux and don´t know most of the OS and prompt comands...

...Please help me help my friend,

Thanks