Now that desktop PC sales and profit margins are shrinking, computer hardware and software makers are setting their sights on you, the small-business owner. "But I already own more computers than I can handle," you might protest. That's just their point. They believe it's time for you to invest in a real network rather than the peer-to-peer system you've been running for the past few years. They think it's time you centralized and protected your data. Well, we think they're right on several counts …and we think it's time to integrate the power of the Internet with your business. The big computer vendors such as Dell, Compaq, Hewlett Packard, and others all have strengthened their line of small-business server hardware. Microsoft has strengthened its position in the networking operating system arena with Windows 2000 Professional (really the latest release of Windows NT). Other oper