How do you get to undernet 3 in mega man battle network 3

From Undernet 1: go down the middle ramp, take the left/bottom path around the ramps to the arrow path behind them and take that to Undernet 2. Go right, up the ramp, and take the second warp point, then go down the ramp into Undernet 1. Wrap around to reenter Undernet 2, and from there it's a clear shot to Undernet 3. If the confuzzling layout . . . um . . . confuzzles you, a postman in Undernet 2 will give you directions.