No Supported Network Card Found, it worked before!!

[gauti.exe]

Im having a very strange problem. I use a Knoppix Live CD. Previously it detected my network card and all went well!
But since the last time it refuses to detect my network card! this is strrange because this never happened before, instead it gives an error message (on going to network card configuration):

No Supported Network Card Found

I am absolutely new to linux so help me out guys!

[marhleet]

in a TTY dos screen
do a

lspci

and copy/paste it back to here
guessing it's there in some weird way

if it's missing, check your bios, it may have been disabled