How to change email and password on PS3

Ironhidemax Posts 1 Registration date Monday March 18, 2013 Status Member Last seen March 18, 2013 - Mar 18, 2013 at 05:40 AM
I have a BIG problem, I wan't to change my password for my playstation network account,
but I no longer have access to the old email account that is registred on my playstation and so I can't change my password!

Is there any way I change my current email and password whitout loosing all my data on the ps3???