How do I change the parental settings on my zbox360?

It’s going to not please let me download the new assassins creed guide pack with the parental setting

I had similar question mainly because heres exactly what id does i identified as up system and when i asked:so your nevertheless the points i got myself are usless ( WHEN I didnt buy any points) as well as guy smartnd ” up ” and laughed and said you should change a person e-mail in the settings to your e-mail thats registerd seeing that 20+.
Think about if somebody went released and acquired 100$ worthy of of items and cant expend them on anything that might be 1 pissed off of customer and also would make xbox appearance bad hence he explained how to accomplish it.:N /go to help account magment and then windows name the transform password

http://manuals.ps.net/document/en/ps3/3_15/basicoperations/parentallock.html page.