how to use a .rar file?

A .rar file is an archive file (its a compressed file produced after being compressed using a file archiving utility like winrar. The purpose of the .rar file is to compress file to manageable units, with security (these files also can be password protected). No, you can't watch a movie in .rar format. You have to first unrar the archive and then only you can watch a movie.

a .rar is a file whic is compressed usin winrar.. the file can be any thing... a movie(.avi,.mpg)... a text doc(.txt)... a pic(.jpg)... but when u compress it(the file) usin winrar it gets the extension .rar... u can extract the file using compression software like winrar,winzip,etc....

A rar file is a compressed file with WinRar.You cannot watch movies on rar.First you must to decompress the file and you can watch on the movie.

a .rar file is like a .zip file. Instead of using Winzip use Winrar. You can find it at http://www.download.com There are other programs that use it as well, it is a very popular compression scheme.