A computer that establishes an ad hoc network, and a method performed by the computer are disclosed. The computer comprises an input device such as a keyboard or a graphical pointing device having a selector that generates a signal which indicates that a user has selected an ad hoc networking function. In one embodiment the computer includes a processor, coupled to the input device, which receives the signal and causes the computer to participate in an ad hoc network. The computer can also include a network interface, coupled to the processor, for communicating directly with at least one other computer within wireless communications range of the first computer.