Hi, Just interested to know, but before I start and ask away I don't have another Mac and I don't know anyone who does so I wouldn't be doing this. This has just been something I was thinking about last night. I noticed the installation CD for OS X which i got with my MacBook didn't require any license codes when I re-installed it last night. Aside that, is the CD somehow linked to the machine you get it with as mine has "MacBook" written on it. Would you be able to install this on another machine? Oh can you tell I'm a newly converted Windows user?