Can't get onto internet through my airport extreme!!!

Question

My airport extreme is connected to my network wirelessly. When I open the airport utility it sees the base station and I have it set up for the network. There is a green light on the base station, all seems well.
Except when I connect my laptop to the base station through an ethernet I can't get onto the internet.
When I do the network check there is a green light on the ethernet but for the network there is an amber light.
When I go into the system profiler and check the advance settings for the ethernet using the DHCP this is what I get.
IP: 169.254.192.90
Subnet Mask: 255.255.0.0
Router: nothing
When I connect to my wireless network on my lap top I get.
IP: 192.168.2.8
Subnet Mask: 255.255.255.0
Router: 192.168.2.1
I will admit I am no genius when it comes to computers or the internet. How do I get the **** internet through my airport extreme?
Oh, and how do I find out the DHCP Client ID?

Answer 1

IP: 169.254.192.90
IP addresses in the 169.254.x.x range are know as "Self-Assigned" IP addresses. They typically arise when your computer, configured as a DHCP client, is unable to find or negotiate with a DHCP server.
The fact that you computer can find the 802.11n AirPort Extreme Base Station's (AEBSn) DHCP server wirelessly but not by Ethernet may be one of the following reasons:
o The Ethernet cable or cable connectors are bad.
o The Ethernet port on either the computer or the AEBSn is faulty.
o The Ethernet port on the computer is not configured properly.
Assuming the fault is the last item above, let's double-check your Mac's Ethernet settings.
System Preferences > Network > Show > Network Port Configurations
o Verify that a Built-in Ethernet option exists. If it does not, click "+" to create one. (Note: If you are unable to create a Built-in Ethernet configuration, the Ethernet card in your computer either doesn't exist or it is not recognized.)
o Verify that Built-in Ethernet is at the top of the list. If it isn't, you can drag it to the top.
Advanced > TCP/IP tab
o Configure IPv4: Using DHCP
o Configure IPv6: Automatically or Off
Advanced > DNS tab
o Verify that your ISP's DNS server(s) appear.
Advanced > Proxies tab
o Configure Proxies: Manually
o Select a proxy server to configure: <All proxies should be unchecked unless you specifically require a proxy for Internet access.>
o Exclude simple hostnames (unchecked)
o Bypass proxy settings for these Hosts & Domains: <leave blank>
o Use Passive FTP Mode (PASV) (checked)
Ethernet tab
o Configure: Automatically
Oh, and how do I find out the DHCP Client ID?
You would create the DHCP Client ID by entering a value in this field in System Preferences. (ref: System Preferences > Network > Advanced > TCP/IP > DHCP Client ID)