Cannot Cruzer 4GB

I have a password protected Cruzer 4GB, that was set up on a Win XP computer that is no longer with me.  I tried to open the Cruzer on my new computer Win 7, it recognizes it and I can see the operating files on “My Computer”.  I cannot find where to put the password to open it.  I have another FD that is not pass protected and it works fine on my new computer.  Any thoughts?

What are the names of the “operating files”?

Not sure if I got this correctly but you can see the file but what happens next when you double click on it?