Advice needed for a locked MMC

Hi there,

just a small verification, this tip is somwhow not applicable in the Nokia 7210 supernova on how to unlock MMC

*Go to file manager on your mobile,
*In the "Settings" option,
*Choose system folders,
*In the "System" folder there's a file called "MMCSTORE",
*Send that to your PC using IR/Bluetooth,
*Then open it in notepad.
*The password you need for your memory card is in that file

What I need is user specific answers. specifically for the above mentioned unit. where is the "system folders' located for the unit Nokia 7210 supernova? or can somebody give me detailed instructions on how to?

Much appreciated,

Thanks