Hi bapatic. Welcome to the forums. Unfortunately, you've supplied no useful information that would allow anyone to begin to try and assist. Just to clarify, are you referring to SUSE Linux Enterprise Desktop 11, or openSUSE 11? (The latter is well past end-of-life BTW.)
Tell us more about your network hardware
*Look for the output pertaining to your network card.
In general, if the network card is supported, a driver will be loaded automatically. Sometimes, a drvier package must be installed first, and the steps would differ depending on the installed distro, and that's why you need to tell us exactly which distro we're dealing with.