gameboyblue

I don't get it, maybe someone could make a tutorial for youtube? I have a 14 frame, 720 x 80 image. I save the image. I try saving it as urbz.agif (the image is called urbz). This resaults in urbz.agif.pdn I try saving as urbz.pdn, then renaming it to urbz.agif, this resaults in urbz.agif.pdn, again. Any help? Thanks!