Changing Directory Name

Hi can someone help with this problem. my Blog was located at http://www.mitchellpage.com.au/wearable_display/ however, now i have changed the directory name to /research/ so that the url is now http://www.mitchellpage.com.au/research/

however now i cannot access the admin section.

one i change the directory, what other files do i need to change so that it all works normally again???? thanks