Try Movie2memcard.
t let you fit the movie at varoius sizes, cropping etc. Support WMP9 and 7, divx and some other I dont know.
It might not be the best program or most fancy looking, but is easie to use and let you recompress into WMP9 real easie. Yo can easily crop movies or if you wantto crompress into smaller files suited for ppc without strecting the ration (mening keeping orignally ration apects of movies).
I fund it quict easie to recopress a 1.2 GB (120 min) xvid into a 250 mb WMP9 version wich looks ok.
I have not yet used the movies on ppc since I dotn have one(yet), but I played a bit aroud this for storing more movies on CDs (for sending to a frend in deep jungle og africa

)
KBN