Routing 2 different networks.

I need to combine 2 networks into one, Net-A = 56k fractional t-1 connection. all systems have static IP including the router out.
Net-B =1.3kb DSL connection. I do have a Bussiness router that brings in the DSL. Efficient Networks mod #5861. I have the DSL set And I need to add the 2nd network, All internet traffic will go to the DSL connection and ALL telnet sections will go out throught the 56k connection. Any Ideas on setting the route pattern in the DSL router?