The context: I am making a piece of multimedia theatre. For this, a performer and an audience member are able to have a text-based I.M conversation using two macbooks in the space. The question: I need the two users to chat without internet. I know that two macbooks can chat via bonjour on ichat, but while this is perfect technically, the speech bubbles are not the right look. I am looking for an aesthetic more similar to a terminal/telnet window, no frills, just say your sentence and wait for the reply. I thought maybe there was a way of creating your own chatroom using a local network, but I'm no computer expert and am hitting (virtual) brick walls everywhere. Perhaps there is also a way of doing this via bluetooth? PS. To make matters worse, there's no budget left, so I'm limited to freeware generally. Thankyou!