How to install network card driver in linux

1. Check the physical network card
lspci
2. Check the startup device loading information
dmesg
3. clear network interfaces /etc/sysconfig/network-scripts
4. enable the dirver

sudo modprobe 8139too
dmesg | grep 8139
ifconfig

5. restart network service
/etc/init.d/network restart
service network restart

http://ubuntuforums.org/showthread.php?t=1754699
http://www.cyberciti.biz/faq/linux-command-to-remove-virtual-interfaces-or-network-aliases/