If you have a wheel mouse, press&hold Ctrl and turn the wheel so you don't have to take your hand off the mouse. The default increments are .5,.75,1,1.25,1.5,2,3 i.e. zoom levels of 50%, 75%, 100%, 125%, 150%, 200%, and 300%. I tried this for viewing spreadsheets which it does OK except if there is a chart embeded which won't zoom. I have heard of an add-on that zooms images but I don't have it yet. When browsing, zooming sometimes does not work at all as some web pages are designed not to allow it. I haven't been able to make Inline Frames work even if the focus point is on the iFrame but the wheel mouse and Ctrl key does work in IE7 unless the mouse is setup differently.