I admit it: I love this job. Almost every day, a new box of software arrives in the mail for my review. One unwanted result, however, of my software surfing is that installing and uninstalling software gives both my Macintosh and my 486 PC a real workout. My hard drives runneth over, forcing me to remove something old so I can add something new. But making more room on the hard drive is only part of the problem. Frequently adding and deleting applications also means my system files are constantly being modified. Macintosh "Preference" and "Extension" files grow every time a new application is loaded, consuming precious RAM, and my PC's AUTOEXEC.BAT and WIN.INI files (to mention only two)