When installed, the program asks if you wish to install the program, which will modify the owner information to Some fool owns this. Once installed, the program will create a new directory System\Apps\userinfo where configuration files and the original owner information are stored.
To restore the original owner information, copy System\Apps\userinfo\system.bak back to System\system.ini To uninstall the program select Control Panel and then Add\Remove programs. Select (Dis)Owner Information and click Remove. Finally, the folder System\Apps\userinfo can be removed.