We have posted the second installment of Ted Landau's guide to Inivisble Files in Mac OS X. An excerpt: "The most common methods that OS X uses to determine if a file or folder should be invisible of ...

A file extension, or file name extension, is the letters immediately shown after the last period in a file name. For example, the file extension.txt has an extension of .txt. This extension allows the ...

When you double-click on a file in Windows XP, the operating system will automatically open the file using a program that has been is associated with the file's extension. It is possible, though, to ...