Hi,
Thanks for posting in Microsoft TechNet Forum.
You need to install updates for Windows Internet Explorer.
A Compatibility View list update is available for Windows Internet Explorer 8: May 5, 2009
http://support.microsoft.com/KB/969497
Meanwhile, you need to fix the incompatibility problems between Internet Explorer 8 and the Google Toolbar.
How to fix incompatibility problems between Internet Explorer 8 and the Google Toolbar
http://support.microsoft.com/kb/968136
Hope this helps. Thanks.
Dale Qiao