shifting installed wp to another folder

I’ve installed my wordpress at my own domain creating a sub-domain, http://blog.pebam.info. Now, I’ve shifted the same installation to http://pebam.info, the main homepage.. everything else is workin fine but the pictures are not displaying. I’ve tried setting the wordpress URL in the settings>general as blog.pebam.info as well as pebam.info.

the images still have the url, pebam.com/2009/…., while the actual url should be pebam.info/blog/…