Well, i had some serious issues with my iTunes installation, the Apple Update Software screw the iTunes-Quicktime install and I couldn’t use my own iTuny @_@ that was really annoying I got to use winamp in the mean time.
I finally fixed the iTunes thing, followed this 2 posts, and mixed them a little (recently installed Windows Live Mail and have the same issue described there)
I had an issue with QuickTime and the ActiveX control, Lucky me there is a post (number 6 to be exact) about this:
Link 3
If you ever have this problems check those post, can save you a lot of wasted time… a little to late for me, but could be Just In Time for you đ
God Bless!
f0vela