Why would you EVER want to do that?????
and more at your finger tips
Internet Explorer is ONLY compatible with Windows Vista and 7
Hence the only way to do that is to have Windows installed on your Mac..like I have Windows 7 on my Macbook Pro through Parallels Desktop
Virtual Box free, Windows 7 Home Premium System Builder SP1 $92.
IE9 is and can be secure and work just fine and I do prefer it to others, but Firefox lets me work in Apple Community easier is all.
Safari still bogs down trying to open multiple tabs, isn't multi-thread efficient, isn't memory efficient or well behaved - beyond the advandages of keeping code in memory it is still a memory hog. Open the same 20 tabs in any other browser is the best way I know. I also don't trust Google that much for security, I consider Google tracking and adsense to be a nuisance. Firefox gives some semblance, especially with add-ons, to tracking, cookies, privacy, and blocking content the best.
Oh, and MacBook Pro?
Or if you want to explore Safari: