Just a suggestion. I downloaded ZBrush over a year ago. If I dismember correctly the trial goes for 30 days(not 30 days of use) then dies. To maximize your experience download those neat how to videos and watch all of them first. Download the demo and install on a weekend so you can get right into it. Plan on making time because your demo will be up all too soon. Nothing but a complete install or a ghost backup of your entire system before the install will let you run this demo again on the same machine. Have fun!