installing trial version of vst instruments on Mac


As you all know there is no CD/DvD drive on the new iMac so I can’t check the trial versions of the vst instruments I got with my new Cubase 7.5 and it can’t be downloaded from Steinberg website either…
I heard there is a way to do it with magic iso - do you know what and how should I do it? or some other solution. I have another computer (windows 7) in order to open the cd’s I got with the trial versions.