hi, i'm in a quandary. i still have my mac power book OS X 10.4.11. i have tried downloading many of the free video compressor software programs and none will do it due to my older op system. conversely i have tried downloading them on my mac book air OS 10.6.8 but they are not downloading either. i thought maybe i could move my video to my macbook air and then work with one of the programs, but i don't know why it won't open. don't ask why i don't have another mac but i thought between the two of these i could do this. i have a 5 meg video i need o compress since i only have the basic membership in vimeo. any solutions, guys?