To minimize errors of this sort, always verify that your computer has the required components. A project management program that you're interested in may require a specific operating system, like Windows XP for example. And although this program may install just fine on a Windows 98 machine, it will generate a multitude of errors once its started. Enabled by a username and password, individual desktop settings (icons, background picture, and other settings) are available after logging onto Windows. Display Properties. Through Display Properties, a user can change the background of the Windows Desktop, add a screensaver, change the overall color scheme and fonts of Windows, and adjust a computer's color depth and/or resolution (screen area). If we want to use this dough to make a delicious batch of chocolate chip cookies, we would need to "accessorize" this dough with chocolate chips and a little brown sugar. If we want to use this dough into in a warm loaf of sesame seed bread on the other hand, we'd need to "accessorize" the dough with yeast and sesame seeds. Although using a vacuum cleaner seems to make more sense, the strong suction of a vacuum cleaner can actually spark damaging static electricity or dislodge loose cables. You also don't want to use oil-based cleaners. Although Pledge may dust your wooden tables and cabinets to a perfect shine, the oil inside a cleaner like this will erode sensitive computer parts. There are hoards of advanced contact database programs floating around the Internet and on store shelves, but Windows provides a completely competent contact database of its own simply known as "Address Book." This small compact utility allows users to organize contacts by name, location, group, or number and it give users ample space to fully describe each. But all of them can be used to control a computer. Now it would be impossible to teach you how to program any language in a single article. But we can still introduce you to some of programming's most basic concepts - starting with the commands we talked about earlier. Commands are the instructions that a computer follows to perform an action.