Your NOOK Simple Touch lets you save your personal digital photos as screensavers. Follow these instructions:
Connect your NOOK Simple Touch to your computer using the provided microUSB cable.
Create and name a sub-folder within the Screensavers folder found in the NOOK Simple Touch directory.
Drag-and-drop your pictures into the sub-folder you created.
Once your photos are in the new folder, go to Settings > Screen > Screensaver, and then select your new folder.
For best results:
Include a few images in your subfolder as NOOK Simple Touch will cycle through the folder using a new image each time the device goes into sleep mode.
Images should be in Portrait orientation. Crop your images to 600 x 800 pixels.
Save the images as PNG (*.png) or JPEG (*.jpg) files.
Images should be optimized for viewing in 16-level grayscale.