A file extension is a suffix that is added to the end of a file name after a dot. It is usually two to four letters long. File extensions help Windows and other operating systems to know the standard ...

BearPup sometimes wants to open a file in one program, and other times open it in another. He asked the Answer Line forum for an easy way to do this. Windows uses a file’s extension–the part of the ...

The default setting for Windows is to not display a file's extension, which is the last period in a file name followed by 2 or 3 letters. Therefore, when viewing files in Windows you would only see ...

The April 15 tax deadline is here, and if you're feeling like you could use just a little more time, take it.

The best tax software will let you file a federal income tax extension to give yourself six more months to finish your taxes. Katie covered all things how-to at CNET, with a focus on Social Security ...