Files are packed in various formats. Some of the most popular formats (file extensions) you will see are ZIP, RAR, ACE, BIN/CUE, IMG, TAR, ISO and NRG.
WinRAR is one of the most popular file compressing applications today. It can open most types of compressed files.
Install winRAR in your computer and extract the downloaded file with your winrRAR to your hard and thats it files are ready to use