For Windows XP
run the 'Add/Remove Programs' utility from the Windows Control Panel, select MoRUN.net Sticker string in the list of installed programs and press the Add/Remove button.
Follow the on-screen instructions.
For Windows Vista
run the 'Programs and Features' utility from the Windows Control Panel, select MoRUN.net Sticker string in the list of installed programs, right-click and select uninstall