I happened to buy macbook (10.4.6; 2GHz Intel Core Duo) off the eBay. When I entered the Login, I found that the Login Window's language is Brazil Portuguese, not English, like, "Senha" means Password. I looked around the System Preference, but no luck. I tried looking this up, but it's for 10.0 to 10.3.9 only. I don't have Mac OS X 10.4.6 CD (the macbook came without it). Is there any way to change the language of the Login Window?