Basic Requirements:Pentium II 400 MHz Processor
Yes, You can unlock any supportive earlier or latest version of rar without any trouble
No, ofcourse not because it is really virus free software it never harm your system during both installation and uninstallation too.
Yes, GSTECH made its GUI so much easy to handle and easy to operate, so no need to have any perfection in computer handling.
Yes, software has install and unstallation feature for every supportive version of windows Operating system. you don't have any requirnment of any other third party tool to uninstall this software.