to use, see how much memory it requires. Youll probably want to upgrade your software eventually, which will generally require more memory from your computer. A good general rule is to buy a computer system that has at least twice the memory capacity of what you currently need.     Another good rule is to purchase a computer with the fastest processor and the most memory that fits into your budget. Its an unfortunate reality that computers are increasing their speed and storage capabilities at almost alarming rates, with software manufacturers creating software that utilizes most of what the newest systems offer. Youll want to get the most powerful system you can afford in order to prolong its usable life.     Finally, make sure the computer system can be expanded at a reasonable cost. Potential upgrades may include a new video card, additional RAM, extra hard drives and a CD-ROM drive. If you dont understand the upgradability capabilities or limitations of a computer system, youre wise to educate yourself before plunking down thousands of your hard-earned dollars.     4. PC or Mac?     When purchasing one or more computers for your small business, a basic choice youll have to make is between IBM PC compatibles (PCs) and Apple Macintoshes (Macs). Historically, its been less expensive to buy, repair and upgrade PCs than Macs. If you plan to buy a few or several computers, this price difference is multiplied. For this reason, many businesses that need a number of computers go with PCs rather than Macs, often saving many thousands of dollars. In addition, some people choose PCs because they provide a much wider selection of software- especially true for general small business software, such as accounting and bookkeeping programs. On the other hand, the main selling point of the Macintosh has always been the ease of setting up and using Macintosh hardware and software. However, largely due to Microsoft and its Windows operating system, this advantage has been waning in recent years. With the advent of the latest version of Windows, some people believe that PCs rival Macs in being user friendly.     Another reason some businesses stick with Macs is that Macs traditionally have been used in graphics and other design-oriented businesses. While several graphic design programs do exist for PCs, the Mac platform has become somewhat of an industry standard in the graphics world.     When choosing between PCs and Macs for your business, base your decision on your business specific needs (which may include compatibility issues) and cost. Be sure that the software you plan to use is made for the type of machine you buy. If you plan only to generate simple text memos and use a standard spreadsheet program every week or so, then youd probably be fine with a basic PC system. If, on the other hand, you were starting a graphic design business, you might want to stick with the Mac platform-which dominates the industry, as mentioned above-in order to be able to use Mac graphics software, and to be compatible with the systems of other businesses you might often deal with, such as a printer or specialty service bureau. (Also, keep in mind that Apples PowerMac machines can handle both Macintosh and PC-compatible documents.)     In general, if theres no specific reason to purchase a more expensive system, dont let computer industry hype push you into throwing your money away.     5. Where Should You Buy a Computer and Software?