There has been a lot of interest regarding the possibilities that the motion sensing technology in the Wii Remote can offer. This study investigates the feasibility of using the Wii Remote for 3D interaction in immersive Head-Mounted Display (HMD) virtual reality. Normal usage of the Wii Remote requires that the controller to be pointed in a certain direction, typically towards the display. The requirements of an input device for interaction in immersive HMD virtual reality differ from that of normal display systems, in that the user should ideally be able to turn around in the virtual environment. A number of design considerations are discussed, followed by a description of how the Wii Remote can be used in a space around the user. This paper also presents results of an experiment that was conducted to ascertain the accuracy of the device when used in a particular configuration.