Itunes does not open!

Hi everyone,
I was hoping someone could help me with Itunes? I just downloaded Itunes 8.2 and successfully installed it into my computer. The only problem is that I can't open Itunes when i click on the icon. It just doesn't open at all. I've tried restalling it but nothing works. SO someone please Help!!! I want my Itunes Back!!! Thanks!!

There might be somehelp here

There might be somehelp here in this Apple article http://support.apple.com/kb/TS1776?viewlocale=en_U
You might also consider a clean install of your operating system software - not sure whatis involved in windows environment.