Hi everybody, I really recommened to take a look in Miaghstir multilingual thread. There you will find many inofficial patches to change the language of some games. http://www.gog.com/en/forum/general/multilingual_gogs
About Baldurs Gate: Unfortunately there are only patches for german (BG1 and BG2) and for french (BG1 only). I'm really new to the game, but as far as I know all you need is to find a filename called dialog.tlk and maybe dialogf.tlk in your language and overwrite the original english file in the game folder.
Edit: Of course you can also post in the multilingual thread if you find a patch ;-)
Ok, thank you very much ... ? I found something here: http://www.megaupload.com/?d=E30NHN6P
but it's only for Shadow of Amn and I was looking for the complete translation for GOG Baldur's Gate 2 (Shadow of Amn + Throne of Bahal) ... ahhaha but now I know that is impossible.
Thank you for your quickly reply.