Is there a method for modifying the predefined Security questions?

All,

I am looking for a predefined method fro modifying the security question and answer that the user gives when creating their own account from the logon page. I thought it would be in the IUserAccount class but I did not see it there. However in the library:

http://help.sap.com/saphelp_nw04s/helpdata/en/e6/d75d3760735b41be930f2dddae3126/frameset.htm

it shows that those attributes are stored within the account. Does anyone know what I could use to modify them? If I can use the setAttribute method where can I fing the namespace of those attributes to pass to that function?

thanks,

-Clint