i just got a new nokia phone 3500c and i tried to use my old memory card (for Nokia 6085) but i was told to enter a password!

i don't even remember passwording my memory card and ive treid all sorts of likely numbers but nothng seems to be working
does any one know what i can do to get the pasword?
PS: i even formated the card but i still can't get any data back into it!