What OS are you using, Leopard? Because Leopard has 2 finger context menu on a PowerBook. I'm still looking for a way to add 2 finger context menu tap to a PowerBook running Tiger. Any thoughts? If I double-click, it tells me it can't be installed because it already is. I could replace the original with this one, is that what you did? If I replace mine (the original) with that file and restart, nothing happens.