Good to know you found it, I recommend emailing it to yourself and burning at least one cd with it and gamestudio on it. If you email it, it might not be deleted, but the cd should be a "just in case".
I have my key in my email, on my pc at the house, the one at the office, and my friend's pc (who also has 3DGS, and is the other half of MangaPage). I think we also have one cd backup, but i'm not sure.