Notes about the ZAR file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The ZAR file type is primarily associated with 'PlayStation2' by Sony Corporation of America. Trivia: The file extension .ZAR was coined by Sony for PS2 games by a programmer that was a fan of photographer David Zar that made Pearl Jam famous with his photos. [Thanks OwenPrinter]