How do I install Apple Application Support?

I was uninstalling some random programs from my computer to clear out unwanted stuff. I suppose I uninstalled some Apple Application Support thing because when I try to open up iTunes, it says it cannot work without Apple Application Support and that I need to install it to use it. How and where do I install this... show more I was uninstalling some random programs from my computer to clear out unwanted stuff. I suppose I uninstalled some Apple Application Support thing because when I try to open up iTunes, it says it cannot work without Apple Application Support and that I need to install it to use it. How and where do I install this "Apple Application Support" program?
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