Which router address are you typing in??? I think the default on a linksys is 192.168.1.1 and your PC should get an address of 192.168.1.X with a DNS and GATEWAY of 192.168.1.1 (same as the router address). In a web browser typing in the default router address should get you to the router login
http://192.168.1.1 (assuming still that that is the default address which should be also specified inthe manual)
The 86.X.X.X address is the outside address and you won't get anything on that address.