language problem in internet explorer

I think that you might need something extra for that, meaning the language you want must be part of your browser package, if it is not then it would not be able to load the appropriate resources for it. You might want to search for those terms and see if there is a package available that will support your regional language.

Ycpgoldberg has a point, window has to be aware of that language before other programs installed in it can use it. Visit this site http://www.microsoft.com/globaldev/handson/user/xpintlsupp.mspx on how to set it properly.