|If I'm understanding this correctly, you have two routers. One is connected to the internet (we'll call that Router 1) and the second one is daisychained to the first (we'll call this one Router 2). From the sounds of it, you have each on a different subnet and wish to have communication between them.|
If this is not correct, then please provide some detail as to the configuration of the router's and their subnets. (ie: they're on the same subnet or different subnets).
If this is correct, you would need to put a path from the network on Router 1 to the network on Router 2 in Router 2's routing table.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.