Not just a bunch of preference settings, display properties help individuals who have to deal with visual problems. Accessibility Options. Speaking of visual problems, another setting that's useful is accessibility options. This setting allows people with disabilities to use a computer that accommodates vision and hearing problems. exe - This extension indicates a program or an application like Microsoft Word, Internet Explorer, or Outlook Express. Use extreme caution when downloading .exe files from the Internet since malicious programmers like to hide viruses in these types of files. .gif - This extension indicates another image file and it stands for "Graphics Interchange Format. There are hundreds of other programming language and neither one is better than the other. Most of them are capable of performing the same tasks and achieving the same goals. A programmer chooses one language by a simple preference. Each of these languages differ by the way they communicate with a computer however, and the commands that they follow are very specific. Basic GUI Terminology Knowing What You're Working With Helps Technicians Getting help with your computer software can be easier when you know the correct terms to use. One of the biggest problems that new computer users have with technical support is not knowing how to correctly describe the problem that they're having. Unless the activities on your computer are restricted to pure textual output (plain text files), your computer is going to get filled with a lot of "stuff" - stuff that can overfill a PC's capacity too much for the computer to function well. The problem is that while upgrading a computer is always an option, technology advances so fast that newer products (such as memory chips, new drives, etc. You'll need a can of compressed air and an anti-static rag to remove stubborn clumps of dust. Hold the can perfectly vertical and spray the fan being careful not to spray the dust off the fan onto other sensitive parts of the computer like circuit boards or inside the motor casing. Wipe up remaining dust with your anti-static rag and then reassemble the computer.