Computers work perfectly all the time, don't they? If that's the case, why are so many people buying utility software—programs that block viruses, fix hard drive errors, clean the Registry, and help remove programs—among many other things? In 2000, six of the top ten best-selling business programs were utilities, according to NPD Intelect Market Tracking. And at Dave Central, a download site, in a recent month 14 of the top 15 requested software downloads were utilities. People are drawn to these programs because they want their computers to work better—to be faster, more reliable, and more secure. On the following pages, we evaluate 20 utilities in 5 key categories: suites, antivirus, backup, partitioning, and disk imaging. And 50 more utilities—less mainstream though still very useful—are reviewed in "The Best of the Rest." Our guess is that after you've read these reviews, you won't want to be without many of these programs—unless you have absolutely no complaints about your computer.