As long as your browser is Internet Explorer 5.5 or higher, you can take the latest edition of Microsoft Office for a test drive without having to install a thing. Experience the bliss of the ribbon, the new UI metaphor that has already won my heart over. I loathe still having to do my work in Office 2003, which we still use at the firm. I can’t wait till we upgrade, but you don’t have to — test it now!