IP Address??

All machines are Win 98/95 and the server is NT 4.0 w/SP6. Using TapeWare 6.20 SP3D for backup purposes. Problem machines are 1 & 2. The entire network including problem machines can see and access 1 & 2 just fine. here’s the problem, 1 & 2 can’t bebacked up by TapeWare because TapeWare uses the wrong IP Address “0.0.0.1”, to communicate with 1 & 2. Also, when pinging 1 or 2 from itself, “0.0.0.1” is what is pinged. Not the correct IP Address for the machine. Have tried everything I can think of including working with TapeWare to resolve. We narrowed it down to the machine itself. It is not TapeWare. I’ve been working on this for weeks. Help!!!!