I am looking for a solution to a problem. I need some sort of software that will allow 5 people sitting on 5 computers (that are all networked in a P2P network) to send messages to each other. And not just instant messaging, but rather they want to use this software instead of sticky notes. So, if someone answers the phone on one end of the building, they can take a message and somehow just send it to another worker's computer through their network, and not have to walk to that person's office and put a sticky note on thier desk.
Any ideas?