UNIX -> WIN95 over 56k Line – HELP

Help please !! I have UNIX box, providing an accounting program, serial connection to a CSU/DSU -> using a DSO 56k dedicated leased line talking to another CSU/DSU (50 miles away). Using Best Communication software and ICE TEN that provides the terminal emulation for the program. My question is… I want to be able to use the program on a second PC, but how will I be able to network them ? Please help.