Get keystarter-1.0-r170712.zip from the link above. It's a good experience to check the file for malware. So, use your antivirus program or try a free one – Panda Free Antivirus. After installation of 97.1 MB, double-click on it and follow the setup instructions.
You can uninstall Keystarter without any problems. Click Start and then Control Panel. Choose the program you need to remove and press Uninstall.