''logitech wireless mouse functions of zoom, previous page, and right /left scroll are not functioning on firefox, but works on IE and other applications'' See My Notes on Mouse Wheel and Button Settings *http://www.mvps.org/dmcritchie/excel/mouse.txt Look over the page and note several scattered references for Logitech mice, often the IntelliMouse drivers work better on LogiTech then their own drivers, but everybody has to find their own solution(s). The other main solution is to use the system settings instead.