unable to use internet problem with LAN card driver
I am new to Linux server, I have RHL enterprise server 5.1, at time of installation LAN card didn't find, so I could not assign IP address. So please help me how to install driver of LAN card.
LAN card in my system is,
Intel corporation 82557/8/9[Ethernet pro 100]
Please any possible solution for this problem, because I am new in linux environment so kindly also mention the commands for driver instaltion.