You can uninstall the application from the Add or Remove programs in Control Panel, but if you encounter issues like: the program doesn't want to uninstall, there is no uninstaller, then try using Revo Uninstaller. Even if it can't uninstall the application normally, it will force it to uninstall by wiping out all traces of its presence from the system.
After that, try running AdwCleaner to make sure that there are no leftover rogue registry keys or toolbars in your system.