I have a business cable line, and now I am adding a T1 line. I have the WAN & LAN IP information from the T1 provider.

Can I just plug in the Ethernet cord and run it into my switch? Do I have to specify which DNS to look to for this new line in the Network connections on the server?

When I connect my laptop to the Ethernet port of the router, crossover or cat5 cable, I get the 169.254.x.x IP. Please advise.