Hi all, I have an Quicksilver model running OS X 10.3.9. I also have a Mac Mini. Since Tiger came out shortly after I bought the Mini, I was able to send away for the free upgrade disc for Tiger. I haven't upgraded my Mini yet. What happens if I use the upgrade disc on the Quicksilver instead? Would it work or mess up my computer? Is the disc specifically made for the Mac Mini? I'm guessing I can't use the disc to upgrade both computers right? (Does it need to verify the upgrade online)? Thanks!