Verizon FiOS does not have anything to do with your DVD player. You need to make sure your DVD player is connected to the proper inputs on your TV.
It is possible that the Verizon installer disconnected your DVD player when they connected the FiOS STB. In that case, you'll need to reconnect your DVD player to a different input on your TV.
Thank you for your suggestiions. If I connect the DVD to the TV and the VCR to the TV,
I don't seem to have any connection between the TV and Verizon Fios. The picture is fuzzy
and the remote which I have programmed successfully for the DVD and VCR will not
change channels on the TV. Prior to my disturbing things, TV and Verizon Fios were
working just fine. Obviously, I have changed the connections, but I cannot figure out what to do.