Change the path for images

I recently moved a client’s blog from /blog/ on her site to root so she could built her whole site with WordPress. I neglected to notice that by default WordPress places all images in the post with a full path. So when we imported the database for the new site, all the images were referencing back to within the /blog/ directory. So I had to go through and manually change all the paths on the images.

Is there a way to define how WordPress codes the images it places on the page? It would be much better to start the path at /wp-content/.

Thanks in advance.

Chris