Chat server?

Forgive my ignorance. I have had very little experience with C/C++, so perhaps this is an unrealistic request. Bear with me...

I've got a VB app that needs to coordinate with other VB apps of it's kind. I have access to a Linux server, and was wondering if there was some way to compile a really simplistic 'router' on the Linux server. Ideally, the router would simply redirect any incoming message to all connected apps.

Er, does anyone know of some rudimentary C source code I could compile on a Linux server to do this?

Basically, here's the jist of what I'm hoping for:

VBApp1 needs to send data to VBApp2 through VBApp100. It has a connection to the listening 'router' device on the server, and sends it's little message, "hello world".

The router listens to each connection, picks up the incoming message, and sends it out again to all connected VBApps.

Doesn't have to be fancy (in fact, the less fancy, the better).

...Any ideas?