Assuming that you don\’t have a Macintosh, and you want to use the Magic Trackpad on a Windows system.  All you need is the Apple Magic Trackpad Update 1.0 for Windows, from apple\’s site, and a copy of 7-zip. Extract the contents of the exe, then extract the contents of the MSP file inside. There is a driver in one folder titled something like \”Binary.AppleWirelessTrackpad_Bin\”. Add .exe on the end of it, and run it and it will install the driver.