I have a dell Latitude Csx. I came to know that ethernet card is necesary for connecting to LAN. I checked my laptop but it does not seem to contain ethernet card. someone told me that RJ-45 and other ports haveto be there if ethernet card is present. All i can see is a detachable 56.6 kbps modem card. Is it possible to install ethernet card on this laptop only as i dont want to buy a new one just because of a card. Also , is it possible that my modem and ethernet card are integrated??