IPC means Inter Process Communication. SimpleIPC does use window messages on Windows if I looked it up correctly, so you won't really have a chance of communicating between different machines with it.
There are various different methods of IPC, and even more of communication between computers. A quick to set up way to do it across machines would be simple Synapse or Indy http servers and clients on a custom port to have all layers required for communication already implemented. Or using one of the existing webservice frameworks.