You can create a directory be hide the phrogram directories and put you images there or you can add them to the images and or sounds directories already in phrogram/KPL.

Go to the right side of the IDE to the files panel and then go down the file tree to the 'Media Files' directory and expand it you will see two directories: 'Images' and 'Sounds', Right Click on one and select Open Folder this will launch the file explorer and show you all the files hidden and visible.

If you look in the Images directory this is where the .X files and there supporting files are, you can add your files here, just drag and drop them into the file explorer window or cut and paste them into it.

Thanks again The Phrogram Team