if i move my site to public_html to a folder 'blog' then what kind of change i need to made in config files. please help me out. Thanks.
hm... well, If I`m right you dont have to change anything...in config.php is only your mysql database connection info...
the database info is same i did not touch anthing, i just move all folders and file in a folder and not working, seems need to config somethings.
You still have to edit the links inside the database. Wordpress is still recognizing the old paths so you have to manually edit them. Or do a fresh install again and then restore your old database. Hope that helps. Let me know if I can help.