How do you get in undernet in megaman battle network 3 blue

Get the Tally from one of the jobs on the Job BBS in Sci-Lab. Then, go to Beach 2 and talk to the purple navi guarding the warp point. He will let you pass. The warp point will take you to HadesNet, where you will be required to equip Press in the NaviCust to proceed. Once across the press-path, you will be in Undernet 1, where all sorts of ghoulies, ghosties, and not-so-wee little beasties will be waiting for you.