Google sidewiki disable in Internet Explorer 8

Today I find a Sidewiki is currently available in Internet Explorer 8. I had installed Google Toolbar in Windows 7. Because I don't want to use the feature, try to disable google sidewiki by the following steps:

Open your Internet Explorer
 --> Click the Google Toolbar's wrench icon to adjust the options --> deselect the 'Sidewiki' checkbox on the Tools tab
 --> Click Save
 --> Now you have remove google sidewiki.