Save that to your Desktop. Then double-click FixIEDef.exe and press OK on the "FixIEDef is running as administrator"
FixIEDef will kill all copies of [b]Internet Explorer and Explorer that are running. The icons and Start Menu on your Desktop will not be visible while FixIEDef is running. This is necessary to remove parts of the infection that would otherwise not be removed. FixIEDef will re-start Explorer at the end of the removal process