Dialup Broken (dns .... )

The user recently installed a cable or DSL modem, a wireless router and a
wireless connection on an ME computer.

Before this, the computer was either dialup or DSL ethernet. Both worked
fine.

Now, dialup can still connect but is:
1) no longer getting dns service
AND
2) is not able to ping numerical IP addresses beyond itself with the dialup.

DSL / ethernet still works fine on this computer.

I've run LSPfix which often works in similar situations. Not this time.
I've removed and reinstalled Dialup Networking.

Other suggestions would be greatly appreciated.

Fred