Hello. I have PS CS3 on my iMac which just crashed. The computer is old and I am deciding whether to fix it or replace it. In the meantime, I need to use Photoshop. Luckily, I have backed up PS and Lightroom to my external hard drive. My registration is for 1 computer only, but because that computer is not working, is it possible to use my backed up PS and Lightroom on my laptop in the interim? And what about when I get a new desktop? Thank you.