Click START
select RUN and type gpedit.msc
Select Computer Configuration
Administrative Templates
Windows Components
Internet Explorer
There, select Prevent Performance of First Run Customized Settings. Select Enable. Then, in the drop-down menu just below that, select 'go directly to home page'. Then click APPLY and OK and exit the menu. All this takes less than a minute. You will never see the IE8 Tour pop-up again.