Like its archrival Norton AntiVirus (NAV) 2003, McAfee VirusScan 7.0 automatically downloads up-to-date virus definitions from the Internet; provides a cogent, lucid interface that’s quick to navigate; squashes malicious scripts, worms, viruses, and other digital miscreants; and is reasonably priced at about $50. Unlike NAV 2003, VirusScan 7.0 has superior technical support and faster scanning times, and it comes with a firewall--essential for anyone with an always-on DSL or cable-modem Net connection. Although it’s a tad less slick-looking than NAV 2003, VirusScan 7.0 is a fine first-time antivirus choice for any Windows user. Current VirusScan users who use Outlook Express or Eudora will want the new features for those apps and should take advantage of the $29.99 upgrade, while current Outlook users should pass for now. Choosing between NAV 2003 and VirusScan 7.0? No need to switch if you already run NAV, but if you’re picking for the first time, go with VirusScan.