BuddyPress Translations is a WordPress plugin by DJPaul that loads your BuddyPress with translations provided by translate.wordpress.org
Currently the following translations are available for BuddyPress:
Dutch
Croatian
Korean
Russian
Portuguese (Brazil)
Portuguese (Portugal)
Norwegian (Bokmål)
Italian
Japanese
Spanish (Spain)
Download: http://wordpress.org/extend/plugins/buddypress-translations/