Every time launching a trial version of AthTek DataRecovery 3, you will be asked to register.
You need to purchase a Serial Number first.
Click Purchase, it will guide you to the webpage to acquire a specified Serial Number.
Or you can click the follow buy link to acquire a specified Serial Number.
Buy Link: http://www.regnow.com/softsell/nph-softsell.cgi?item=22311-3
You can also buy it through our official website: http://www.AthTek.com
Or search "AthTek DataRecovery" in a software download website for a Buy Now button.