Operation not permitted

[sniper]

Hello,

I am fairly new with linux so sorry if the answer very simple.

I boot with te knoppix live cd and in order to install my linksys wpc54g wireless network card, I have to make a folder in /lib.

I do a remount of the /KNOPPIX and /mnt/hda1 to rw in order to have a read-write filesystem. Then when I do
sudo mkdir /lib/test
for example the message return
Operation not permitted

Is there any way to modify the /lib filestructure without install KNOPPIX on my hard drive. I have done a poorman installation without any succes.

Thank in advance

Sniper