My DVD-ROM/CD ROM exploded, and I got Modern Warfare 2 and another DVD game that I only installed on a laptop. But I can't on my desktop. If I buy a USB drive, and copy the folder from my laptop to it, then transfer it to my desktop computer will that work? I've heard that you need registery settings to be added to work, but I'm thinking that can only happen if I install manualyl from a DVD. And after I used the space in my USB drive, can I delete all what's in there and transfer some more data in it? I do not feel like changing my CD/DVD just yet.