all languages are installed on a typical OS X install.
In the System preferences, go to International. From there you drag your language of choice to the top of the list.
Restart and you should be on the way.
If you do not see Portuguese, then you will need the installation disk.
I am buying PowerBooks for students here in Brazil. They all have some level of OSX 10.4 but are in English. I need to change the base language to Portuguese. Is there a way to do this without the original install disks?
I may have one or two systems with OSX 10,5, so the same question applies there.
Thanks fo any help. The students would thank you, too.