2 Broadband connections on 1 Network

Archived from groups: microsoft.public.broadbandnet.hardware (More info?)

I have both cable modem and dsl modem service at my
house. I want to configure my Windows SBS 2003 with
Exchange Server to use the dsl connection since this
provider does not block port 25. I also want this same
computer to be accessable to the other computers that are
connected to the cable modem network. Trying to figure
out how to bridge the two network routers or how to
install second network adapter in SBS computer to have two
ip addresses, one for the dsl and one for the cable modem
networks.