CompuServe Messages

I am porting an OS/2 application to Win32s. Under OS/2, I have two separate processes communicating via named pipes (they can be on the same machine, or on two different machines). What would be the best means of communicating between processes? I need to support the following configurations: OS/2 client to OS/2 server (I already have this, via named pipes) Win32s client to Win32s server Win32s client to Win NT server Win32s client to OS/2 server Ideally, I'd like a single means of communicating across all platforms (how about named pipes?). I don't mind using TCP/IP if *absolutely necessary*. Have I missed any options? Thanks Gerry