Cannot set port information.

This one usually is related to modem problems.

Try deleting the connectoid (the dialer in dial up networking).

Try uninstalling/reinstalling Dial Up Networking (DUN).

You could also try uninstalling, rebooting, and reinstalling the modem as well.

Also try turning up the modem volume, and trying to listen to make sure you hear the dialtone, and the modem dialing out, and hopefully some handshaking from the other end.