DUN Passwords in Win XP

I have migrated my personal settings from an old coputer running XP to a new one using the Files and Settings Transfer Wizard. The DUN settings migrated correctly but without their User Names and Passwords. This has not generally a problem as I know what these are and I have re-entered them manually. However, with one DUN connectoid I know the User Name but have evidently forgotten the password. It is most frustrating as my old machine knows what it is and can still log on using it. Is there any way I can extract the info from my old machine in order to enter it into my new one?