How can I add new pictures?

To begin, find the roster folder. Within that folder is a subfolder called Apps. This contains yet more subfolders, one for each Notebook Press product And within this application folder is the final subfolder which can store your new pictures.

On a Mac, you might therefore find this picture folder at
/Library/Application Support/Notebook Press/Apps/MathOne/Pictures

On computer running Microsoft Windows, this folder is normally found at:
C:\Program Files\Notebook Press\Apps\MathOne\Pictures

Since there are twelve levels in the program, you will want to put twelve pictures in this folder. Simply copy your pictures files (in "jpg", "gif", or "png" format) into this folder, then restart the program. These new pictures will be used in place of those that were supplied with the program.