How do you get to sersnade in Megaman battle network 3

First, defeat Alpha. Then, collect the hammer from Undernet 7. Go to the Secret Area through the Undernet server. Make your way through the Secret Area, defeating DarkMan and YamatoMan. Serenade will be in Secret Area 3 at the top of the huge slope. You must have all 200 standard chips before his door will open.