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Yes you need to edit the SBTL of the object you want with s3pe, first section is the name of the object the second is for the description in game.
The tricky thing is you need to find the language SBTL you want..i just copy paste in all of them manually but CMAR has a tool to edit them easier here : http://www.modthesims.info/download.php?t=489424
Good luck ^^