Right on nater! Good info there. You may also check & see if you have a firewall running that may be masking the IP,...giving you a 192.168... address. If you do have a firewall, try disabling it, then release/renew your IP address and see what kind of errors you get....
Open
-Start
--Programs(or All Programs)
---Accessories
----Command Prompt
Type:
ipconfig /all --will show all ethernet adapter information
To release/renew your IP(should be using DHCP with the cable)
Type:
ipconfig /release(releases IP & ethernet connection)
then type:
ipconfig /renew(renews IP & ethernet connection)
Try that after disabling your firewall & see what you get...if you even have a firewall.
Also, if COX didn't have you try this, I'd try this before I did anything else...
-Shut the computer down
--Unplug power to the Cable Modem
---Wait about 20-30sec & turn the cable modem back on
----Wait at least a minute
-----Turn on the pc and see if you have a connection.
Just some things to try...