First you buy GPCinema from JOYGP for an extremely low price of ~$8. Then you make your own DIVX AVI files using DIVX codec 4.12 or Kopei's (I think that's how you spell his name) XVID codec. Then you put your encoded AVI files anywhere on your SMC, insert it into your GP32, run GPCinema and watch your AVI files. No GPM format is required.