Abstract: Recent technology advances make laptops tether-free. Longer battery life makes a laptop run for hours without a power cord. Wireless communication makes a laptop connect to a network without a network cable. However, in some cases, a cable is still needed to connect the laptop to a specific device. For example, a speaker has to use a video cable to connect the laptop to an overhead projector to make a presentation, although the laptop has the wireless access capacity and the conference room has the wireless access point. This is mainly due to a lack of appropriate software. A lot of time has been wasted to make physical cable connection and disconnection. This paper discusses a software solution which projects an application running on a laptop wirelessly onto the computer connected to an overhead projector. A prototype system has been implemented based on that idea. With this wireless presentation system, a speaker can immediately access the overhead projector without using a single physical cable. This will save time for the speaker as well as the audience, and the total amount of time saved will be enormous.