One of the smallest handheld computers--at 3.2 by 4.7 by .7 inches--is also the biggest seller. 3Com's PalmPilot, which boasts e-mail connectivity as well as built-in software for keeping an address book, a to-do list and other staples of an organized entrepreneur, claims more than 50 percent of the hand-held computing market.
The huge sales have prompted the creation of numerous Web sites aimed at PalmPilot users. Among the best are PilotGear (http://www.pilotgear.com), which sells accessories (such as custom cases and a fancy stylus) and Ray's PalmPilot Software Archive (http://www.palmpilotfiles.com), featuring hundreds of downloadable software add-ons. Everything from games to useful tools can be found in the archives. For more information on the PalmPilot, visit 3Com's site: http://www.3com.com/palm