I can suggest you to open customization packs (mine are in RAR format) and find XML file (Customization.xml) and open it. Search for country specific chars like UK, BG, GR, US. I think this is the way you can find out if your combination of FS+MAIN+CP supports the language you want.
Also you can search in http://www.topsony.com/forum/cmps_in...=info_lenguaje