problems installing the trial versions on a second pc

hello, I have installed cubase 6.5 with all trial applications that came in the box, to test the performance on a macbook, but really i have decided to work with my desktop computer in the studio, i have downloaded cubase 7 and install it on this computer, but when trying to install the halion sonic from trial dvd installer tells me that the dvd trial software has already been installed, of course I did it in the laptop. What can i do to use to install from my dvd trial software and buy the activation code for the other team where I will eventually use permanently halion sonic and other trial software, thanks