How do I delete IE9 and install IE8?

I have never used IE9 but I know there was a way to roll back to IE7 from IE8 so Google "IE9 to IE8 roll back".

http://www.neowin.net/forum/topic/940140-ie9-rollback-to-ie8/

John, may I ask why you want to change back to 8?

Go to Updates
Click on Installed Updates
Find IE9
Click on Uninstall
Once it has been uninstalled reboot
Tada IE8 is back!

(won't work on pre-installed ie9)