Resetting the v-chip password so i can remove it and watch all that i want

i got my tv from my parents and they set the v-chip but forgot the password. now i can't watch a lot of nice programs, so i wonder if there is a way to reset it. i read the manual and it says, and i quote: " If you forget the password you cannot set the v-chip. to avoid forgetting the password, write it down and keep it in a safe place". they didn't write it down, so i've tried every combination of numbers that comes to mind, with no luck. can you help me, please? thanks!