I have a neighbor who is rockin Sonar 4XL on win xp pro on a p4.
i kid you not.
I don't encourage him to upgrade as he has enough trouble when he has trouble.
And when he has trouble he calls me.
I had to put the vst wrapper adapter on it when he went out a got nectar vst.
I tried to explain vsts vs dx - I just get that look...............