Already succeeded installed my wordpress to localhost. Everything works until I had trouble the how-to upload my post/themes into online version, i.e oursites.wordpress.com and finally I’ve got this link.

http://id.forums.wordpress.com/topic.php?id=31&page&replies=5#521490847490209889

Thanks for the link, still trying now, next post will be the result whenever I’m succeeded or not.