how do i put photos on ipod classic

want to know how i can put photos from my computer to my ipod classic.

i have tried just dragging them into the ipod folder but that didnt work.

so i tried making a new folder and put my photos in there but then when i went to put them on my ipod classic it told me the photos werent there.

please HELP.

and there was no manual or cd that came with it, it came with a manual on how to put songs on but nothing else.