The invention provides an apparatus for interacting with a computer system comprising a processor coupled to a display. The apparatus comprises a body configured to be moveable by a user. The body has a position sensor therein for producing a main position signal. A plurality of probe members are connected to the body. A plurality of transducers are coupled to the probe members for producing probe motion signals representative of positions of the probe members. A plurality of actuators are coupled to the probe members to selectively apply force to the probe members. A control system is coupled to the position sensor, the transducers and the actuators for receiving the main position signal and the probe position signals and interacting with the processor in order to produce control signals for controlling each of the probe members.