Changing img folder address

[before]

Hi guys;

My host has recently performed a server migration and unfortunately this caused some issues. I think I've fixed them all, but the last one is about the 'images' folder address which was initially set to an IP instead of a DN. This IP is obviously no longer in use.

Here's an example: http://216.67.224.50/~ixtremte/forums/images/

Well I'd like to change it to actual DN to fix the problem but how could I do?

Thanks so much in advance.