You can remove this application from your computer by the usual way, by going to Start -> Control Panel -> Add/Remove Programs (for Windowx XP) or Programs and Features (for Windows 7), select the application and hit Uninstall. If this doesn't work, you can try using a third party software that will force remove it from the computer. You can try using Revo Uninstaller or CCleaner. To make sure that there are no leftover rogue registry keys or toolbars in your system, you can use AdwCleaner.