Luigi's Mansion iso won't extract

okay so i need help on how to extract the file every time i try to it gives me an error saying this
! C:\Users\Ryan.FREDCOMPUTER\Documents\Downloads\Luigis Mansion (U)(STINKYCUBE).rar: CRC failed in Luigis Mansion (U)(STINKYCUBE)\sc-lm.iso. The file is corrupt
! C:\Users\Ryan.FREDCOMPUTER\Documents\Downloads\Luigis Mansion (U)(STINKYCUBE).rar: Unexpected end of archive
Thank you ahead of time

Your download may have been corrupted or failed to complete due to an interrupted connection.Use a download manager like FlashGet www.flashget.com to download larger files and it will help avoid corrupted downloads, and let you pause and resume downloads.

okay this helped a lot ;D