I recently got my computer back after having new virus scanns on my computer downloaded.. and I have used itunes since then but last night when I logged out and logged back in this morning, when I click on itunes, all that happens is it has the mouse thing which looks like its loading for a couple of seconds and then just stops?
I have un-installed it, and re-installed it, but till it doesn't work?
I also have tried to open it in several different ways?

Can anybody please help me and tell me what I have to do for itunes to open?