Hey guys.. so I just bought Windows XP with SP2 from eBay so I can have it on my MacBook, which should be at my house tomorrow or Saturday! Anyway, on the package it comes with a certified label thing that says "You are required to affix this Certificate of Authenticity to the exterior of the PC." Errr should I really stick it to my MacBook? Or should I just stick it to the CD cover sleeve thing and keep it in a safe place? I know, stupid silly question, but it's buggin me! haha. thanks in advance!