Craftliady, take a look at my steps in this thread.
http://www.quiltingboard.com/t-37639-1.htm
I know it's long and wordy, but it is not hard to actually do.
I still have a few more months of my Norton subscription, but it has so seized control of my computer that I plan to get rid of it when its time is up and try Avast. So it's very good to see that your experience with switching has been a positive one.