Linksys WRT160N will not finish installing. On the 4th step it says your ethernet cable does not appear to be connected properly. Error 321. I don't really think its the ethernet cables because i tried 2 new ethernet cables and got the same result. Any ideas?

I think you are trying to install the router using the CD. This CD has a bug. Even if your computer is connected to the router , it will say the computer is not connected to the router and it will give you error 322 or 321.
You can install the router without CD also.
Make sure that your computer is able to go online through the modem only.
connect the computer and the modem to the router and open the set up page of the router.
On the set up page you can change the settings of the router according to ISP.

Click Here for step by step instructions

The LAN cable maybe faulty, try a different LAN cable.

If you connect the computer directly to the modem, does it work?
If that works then the modem is working.
Now connect the computer to the router and the modem to the router.
You will need to open the set up page of the router to check the settings of the router.
You can set up the router without the CD also.
It is very easy.
Click Here for step by step instructions about how to set up the router

Reset it.. Then plug into a LAN Port. Just http into it. To see if it works.. Let me know how it turns out.. www.ywaitsystemservices.com

This is a well documented problem with linksys routers. Go to google and type in "error 321 linksys". You will have to manually configure the router as stated on the linksys forum posts.

try this power of both pc and router , unplug router power on pc then power on router see if it then picks up the isp, if not just simply unpup router and plug it back in while pc is running hope this helps!!!! good luck

Call Linksys Technical Support, if they cannot help try this http://technicalsupport.blog.friendster.com

Reset the router to factory defaults and reconfigure it. In case it doesn't work then try upgrading the firmware on the router. This should fix it.

First, see if your firewall is not blocking the connection.
If it is, add the connection as a "safe" or "authorized". It depends on the software.
Also, check if your IP address is set properly.