Follow These Steps :
1.Download XUS PC Lock Ultimate from here.
2.Extract The Files.
3.Click on XUSPCLockSetup.exe and install the application.
4.Now To make it a paid version open the folder named crack .
5.Copy the files from that folder.
6.Paste It inside C:\Program Files (x86)\EDesksoft\XUS PC Lock.
7.Replace the existing file.
8.Your Done!!!!