Change texture path

I have a project file that I started on my laptop. It has a number of image planes with textures. The file was created on the D: drive on my laptop. I put the file on the E: drive on my desktop, the D: drive is a DVD. When I open the file on my desktop the textures are not found. Is there a way to indicate the location for all of the textures all at once, or do I have to change the path for each texture one by one?