iPod or XP looking firmware for 1.5 nano clone

I saw a few mp4 players on youtube. one looked like windows xp, the other mp4 operated EXACLY like a real iPod except it had a video option.
is there anyway i can download that onto 9.0.48 firmware without any possible threat of wrecking my mp4 player??
i cant take any risks but i REALLY want it to operate like an ipod or windows XP
my email is pmilladcs@yahoo.com and my myspace is myspace.com/balla22_holla
please help!