I bought an airport express with AirTunes MAC+PC. I used for a time but disconnected it and did not use it for quite a time. I forgot the password I used before and now that I wish to use it again, I can't join because I have forgotten the password. How do I retrieve the old password? Is it possible to reset the unit and begin with a new password. How do I do it. Thank you so much to anyone who can give me assistance.