I think StartConversation, would be the function you're looking for, and as for the distance check, maybe look at some of the scripts running on the guard robots at the entrance to the vegas strip in the game. If you need more detailed help let me know. As for the board, I'm not too sure, it'd probably have to be an activator, like a toilet or something, with a script using the AddItem function, to give you something, or ShowMessage (not sure about the actual name of this one?), to have it display a message box.