Thanks When you install the new DIR-655 router, you didn't copy the security setting from the old router.
All 3 of our computers can get into the router (2 wired and 1 wireless).
Even those 2 wired computers that are showing validating identity. My ATT VOIP box, Network printer and my DLINK DNS-323 NAS all work fine.
Reset or change the security settings on the two wired computers. For right now I just disabled (unchecked) "Enable IEEE 802.1x Authentication for this network" on both wired computers. But now by doing so, would it do any harm to my network? If you have a home network, it's unlikely that you have a RADIUS server - so that's OK.
Note: IEEE 802.1X security is the highest of those available. Because the key is not shared - it's issued by the server, and is unique to your machine. While both WPA2 and WPA security are excellent, their weakness is that the key is shared between all systems on the network.
Firewalls are these locks, and just like in the physical world, they come in different shapes and sizes to suit different needs.