Hello William,
have a look at the sample configuration below, which I think might apply to your situation (you might have to change the interfaces, if you are using PPPoE, but you get the idea):
ip cef
!
interface ATM0
no ip address
no ip route-cache
no atm ilmi-keepalive
dsl operating-mode auto
!
interface ATM0.1 point-to-point
no ip route-cache
pvc 0/38
encapsulation aal5mux ppp dialer
dialer pool-member 1
!
interface ATM0.2 point-to-point
no ip route-cache
pvc 0/38
encapsulation aal5mux ppp dialer
dialer pool-member 2
!
interface Dialer1
description CableModem Connection
ip address dhcp
ip mtu 1452
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication chap pap callin
ppp chap hostname USERNAME
ppp chap password 0 PASSWORD
ppp pap sent-username USERNAME password PASSWORD
!
interface Dialer2
description DSL_CONNECTION
ip address dhcp
ip mtu 1452
encapsulation ppp
dialer pool 2
dialer-group 1
ppp authentication chap pap callin
ppp chap hostname USERNAME
ppp chap password 0 PASSWORD
ppp pap sent-username USERNAME password PASSWORD
!
ip nat inside source route-map ISP1_Connection_1 interface Dialer1 overload
ip nat inside source route-map ISP1_Connection_2 interface Dialer2 overload
!
route-map ISP1_Connection_1 permit 10
match interface Dialer1
!
route-map ISP1_Connection_2 permit 10
match interface Dialer2
!
ip route 0.0.0.0 0.0.0.0 Dialer1
ip route 0.0.0.0 0.0.0.0 Dialer2 200
!
dialer-list 1 protocol ip permit
HTH,
GP
