GUI chat over LAN
Now that I've setup our little LAN I'm interested in the easiest possible way to setup a GUI chat capability between the two connected computers. After asking this question on IRC I got suggested to use write, talkd and other such stuff, but what I really need is something that can be used with a GUI (prefferably GTK) especially since my sisters aren't some GNU/Linux or command line experts (not afraid of it, just not that interested) and would prefer a GUI program they can just launch from the desktop when they want to send me a message. I would then recieve the message to my own client program.
I am looking for something direct, hopefully not involving any server setups, just maybe some sort of deamon or background app running, communicating with the deamon running on other computer over LAN and sending a message to it when we do.
So basically it should be a very simple GUI program for communicating between two computers.
Anyone knows of such a thing?