My kids have the IPOD CLASSIC how can I hack it , to change a few things
Yup, but 160 gigs of media in my pocket totally makes up for it though.
You can't. (Stupid encrypted firmware)
Don't expect to be able to, Apple has wised up to hackers and put new firmware on that nobody bothers to break. Google iPod Linux or Rockbox, and you'll get a full explanation.