sit format (if you're using a Mac). The two most popular software programs used to compress and decompress files are Winzip and StuffIt respectively. There are other programs that do the same thing and there are even programs that can compress and decompress files for both the Windows and the Mac system. Conditions allow a program to perform an action based on the outcome of a previous command.3 Using this type of instruction, we could instruct a program to do one thing if the "x" variable in our latter example turned out to be 7 days, and then do different thing if the variable turned out to be 3 days. Most (if not all) manufacturer's reserve a portion of cyberspace and dedicate it to support the products that they build. Microsoft's help desk is good example. 3. Fan sites. Fan sites probably isn't a good name for this resource, but you can find websites that are dedicated toward supporting the users of a particular software program or piece of hardware. Both Internet Explorer and the AOL service software can display this kind of file, however if you don't have AOL installed on your system, Internet Explorer will display it. .avi - This extension indicates a video file playable by most multimedia viewers including Microsoft's Media Player. .bmp - This extension indicates another image file that might have originated from Windows Paint program. For those entering the United States from a foreign country, users will appreciate how Windows grants use of keyboard layouts native to their original language. Other uses will appreciate the different selection of cursors and the ability to add additional ones. Passwords. Since the computer in use may be shared with others, Passwords gives the almighty administrator the means to determine whether all users will share the same preferences and desktop settings or if users can customize preferences and desktop settings. Smartphones are mobile phones with computer like capabilities. What's that? Aha! Yes, you've not only heard of them, you've probably seen them as well. Packed with Internet access, email capabilities, address books, and a whole lot more, cell phones have come a long way since their first debut. But be careful not to confuse these newest toys with sandbox devices.