Network preferences reverts to modem

I Have Verizon Fios on 2 computers. One computer cannot connect any more. It is a G3 running system 10.1. In system preferences the set up is a modem port. I can't change it to built in ethernet as it keeps reverting to modem port. The apply now button is faded and won't let me do anything. Can this be fixed?
Pat

I resolved this myself.

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    64 bytes from 64.233.167.99: icmp_seq=7 ttl=244 time=230.239 ms
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    64 bytes from 64.233.167.99: icmp_seq=3 ttl=244 time=172.745 ms
    64 bytes from 64.233.167.99: icmp_seq=4 ttl=244 time=226.723 ms
    64 bytes from 64.233.167.99: icmp_seq=5 ttl=244 time=171.883 ms
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