Things You'll Need
Instructions
Download one of the extracting programs from the Resources section. All of them work exactly the same, so its a matter of preference.
Locate the RAR files that need to be extracted. RAR files come in a few different formats. If you have many files that have "partXXX.rar" with the X's being sequential numbers, right-click the "part001.rar" file. If you have RAR files that have ".rXX" at the end(again with the X's being sequential numbers), right-click the ".rar" file. This is usually at the end of the list of RAR files.
Click "Extract" from the menu that appears, and click "OK" to extract the ISO file from the RAR archive. This could take a few minutes depending how large the ISO file is. The ISO will be extracted to the same location of the RAR archive.