i have cubase 6.5 that updated to 7 , i have only the dongel (lost my cd) , now i have a new macbook pro and im asking what will be happend if i will download the 7.5 trial and will insert the dongel? or if there is a place that i can download cubase 6.5? tnx 
There’s a full 7.0 download available at Steinberg.net > Support > Downloads. C6.5 was an update from 6 so you need that on CD first if you want to run 6.5 (or ask for a download link from support).