I tried to configure wired card to access the net,,,what I did :

Start Menu--> Knoppix--> Network/Internet--> Network Card Configuration , then I received small winodws called "Xdialog"

Use DHCP broadcast----> I answered "Yes" -----( i tried at different places at work) with some places it is ok,,with the other places within same building it failed,,,,Is there any reason for that ?

Am I doing the right thing ?

Do I need to be aware of something elase ?