It is possible that this program is infected with a malware or a virus. To remove it from the computer you can try the common way. Go to Start -> Control Panel -> Add remove programs (Windows XP) or Programs and Features (Windows 7), select the program and click Uninstall. If it doesn't work, you can try to use a third party tool. Revo Uninstaller is a program that can force an application to uninstall by removing all traces of its presence from the system. You can also use AdwCleaner to make sure that there are no leftover rogue registry keys or toolbars in your system.