1. System => Administration => Network
2. Fill ur root password
3. Activate the network device i.e eth0, if its not there then add it
4. Fill in the DNS entries
5. After all set edit the eth0 and make it static ip there with adress = "192.168.1.2" , subnetmask="255.255.255.0" and gateway="192.168.1.1"
6. Open terminal "ping 192.168.1.1"
7. If alls well, ur blessed!
8. try "ping yahoo.com"
9. If alls well then ur connection is ready else there is something wrong with connection at hardware level or dns settings.
Also since ur a newbie refer to this
Linux: Making Life Easy and other threads in stickies.