Security, spams, software patches. Those four words say a lot about the software you need to run your business. Our 2004 Complete Guide to Software includes tools for protecting your computers against these threats and much more. The programs on our list will make you more productive, save you time and even save you some money. We have applications that will help you run a one-person shop or spread work out across your departments, plus applications for Mac users, PDA devotees and hosted services that require no software installation at all. And to make it even easier for you, our online version also has links to downloadable versions of the programs and to shopping comparison services and reviews, courtesy of CNET. So get to work!