Angel: You wouldn't be the first person to throw away the installer DVDs without recognizing them — they are very inconspicuous. I don't recall exactly how they were packaged with my MBP (one of the early unibody models), but I remember thinking "Wow, I bet a lot of people aren't going to find these" — and sure enough, we've seen some posts here from folks who overlooked them and only realized it after the trash had been hauled away.