The best thing would be to translate your entire bbPress. Check out this post on internationalization. Since it has ‘You must login to Post” on that post you put up, I am assuming you haven’t used a translation file.
it means that i c ant translate it ?
Actually, I think it means you CAN translate it. I don’t know how to translate, and I only know what I have read here, but I think you need a program called poedit http://www.poedit.net/ to create the translation.
Also, maybe this is relevant?
And, here is a list of current translations. If you create a translation, maybe you can add yours to the list:
any news on how to use poedit?
Like Chris said, Pro Forums is doing it’s best to make a list of all the current translations. So if you could, add your message here with the link to your translation so we can make the list even more comprehensive.