In simple terms to setup for networking you need to set the following:
IP Address: aaa.bbb.ccc.ddd
Subnet Mask: 255.255.255.0
Gateway:
For the IP address a good example is 192.168.0.x (where x is 2 thru to 255)
You will also need to enter in the IP addresses of your ISPs DNS servers. Your ISP can help you directly with this.
-Jar.
[For the more net-techy out there, I KNOW this is very simplistic, and I KNOW i could have given more info, but most people just need the basics]