When
you import pictures for your story, Photo Story checks to be
sure that they are in the landscape orientation, that is, that
they all have a 4:3 aspect ratio (the relationship of the width
to the height of the image). If it finds any pictures that are
in a "portrait" orientation, Photo Story displays
the Remove Black Borders button on the Import
and arrange your pictures page.

In
our project, only two of our images are actually in the landscape
orientation; seven are not. We need to fix that. To make our
images conform to our story format, we will select the first
photo that is not going the right way (Abigail Adams) and then
click the Remove black borders button.

In
the photo on the left, we can move the box around and resize
it until it fits properly into the format space. The result
of the adjustment is shown below: When you are satisfied with
the picture, click Yes. Notice that you will
need to sacrifice some of the "length" of a portrait
style picture in order to accomodate the format of the video.

Repeat
this process with all of the pictures that started out in portrait
orientation. Once all the pictures are in a 4:3 aspect ration,
you will be returned to the Import Pictures
page. Click Next at the bottom of that page
to move on to the fancy stuff.
Note:
If
you need to rotate a picture, you should do that first, before
removing the borders. Removing the borders in a Photo Story
project picture DOES NOT alter the original
picture that is stored on your computer.