My suggestion delete Internet Explorer all together and use Mozilla Firefox. I had so many issues with both versions just constantly shutting down or crashing on there own. Mozilla not even once in 7 months now. And I have at times 20-30 tabs open; it runs less system resources also than Internet Explorer.
Why would you want IE8?
There ARE reasons to run IE8...
I have it on a couple of my shop computers for security camera software that wont work in 9...