Joomap is probably the best component for Joomla, for generating HTML or XML site maps. Together with it, there is another imporoved Joomap component, that is called Xmap (as eXtended Joomap, I presume). The biggest difference is in interface, an that Xmap supports multiple sitemaps.
Anyway, I already had a Serbian (Srpski) translation of Joomap v2.05, and now I expanded that with translation file for Xmap v1.0.4.
So, download them if you need them, and install by copying in components language path.