There are many plugins that offer transliteration support to your word press blogs. I maintain another blog and wanted to blog in Telugu. So, I searched for those plugin’s and here are the two plugins that I really like. It feels good to be able to blog in your language.
Google transliteration: This allows visitors to your blog to comment in any of the supported languages. It supports many Indian languages too.
WPGoogleLangTransliteration: This allows you to blog in any of the supported languages. There are many Indian languages supported by this plugin.
You can install these plugins from your word press blog. Click on plugins-> add new and search for transliteration. Click install and you are ready to blog in any of the supported languages.