I think the Knoppix 3.1 2004-02-16 is bad.

I downloaded Knoppix 3.3 2004-02-16 last night and burned it to cd with Raxio EZCD 6
.
3.3 2004 2004-02-16 was the only version I could find.
The MD5 sum matched.

I am currently using Win XP.
I could not read the files, I could not even read text or even html.
I CAN read my Knoppix 3.1 cd I copied from a friend.
I cannot even read the iso with "iso buster".

I CAN read the iso of knoppix 3.1 with "iso buster", and even extract the boot floppy image and other files.

Please help me.