Just a warning, since I think many people use ZA. ZA 5 which is released yesterday, I believe, is full of bugs and all kinds of problems.
I wasted about 5 hours of my time today dealing with it. When I went to the ZA message board I found many unhappy people there too (and I thought it was just me). There was also a detailed suggestion on how to uninstall ZA and go back to previous version. I did that and my system is back to normal, it seems. But I don't wish it on anybody to go through this.
"The creative process is nothing but a series of crises." Isaac Bashevis Singer
"My experience is that as soon as people are old enough to know better, they don't know anything at all." Oscar Wilde
"If a nation values anything more than freedom, it will lose its freedom; and the irony of it is that if it is comfort or money that it values more, it will lose that too." W.Somerset Maugham