step1. Download grit at http://www.coranac.com/projects/
step2. Place the image in the grit folder
step3. Create a batch file
step4. Edit the batch file and insert the following text: grit <image.ext> -m! -gB8
image.ext can be img1.png or img2.gif
The -m! and -gB8 are possible options to convert the image. All options can be found in the help file wingrit.chm located in the grit folder.
step 5. Execute the batch file and a .h and .s file will be created.
step 6. Copy these files the nintendo nds project folder.
step 7. Include the .h file in the source code of you’re application.
step 8. The image is now included and can be used.