Reformatting and restoring a PC is not fun--in the way spending 2 hours in the dentist's chair is not fun. You have to back up all your data (and pray that you haven't forgotten anything), reformat the hard drive, install Windows, track down missing drivers, find and reload all your software, restore your data, and pull out clumps of hair over the things you inevitably neglected to save. (Firefox plug-ins, anyone?)
Vista received well-deserved criticism for bringing few noteworthy new features in its train when it arrived to take over from Windows XP. In contrast, Windows 7 offers plenty of new stuff to like. Fortunately, you can add many of these features to your Vista or XP machine by using downloads and Web services.
Much of the excitement about Windows 7 relates to an assortment of user-interface improvements: a little eye candy here, a few window-management tweaks there. Below are some of the highlights, along with the tools you'll need to get them for your current OS.