I'm stuck on mission 3. I can get into all computer rooms except the one in the bay with the control room overlooking the lift that leads down to it. You go down the lift and there is a shield blocking the door. I used the computer in the control room to unlock everything I can. I have been to the other rooms but can't proceed without the disc that must be in that room. Any help appreciated??

Is this some sort of Finnish tabletop RPG?

someone helpful should be along shortly.

Can you post some screenshots? I've played through Leeza 3 dozens of times, but since it's been quite a while since the last time, I can't remember the areas in question by the description alone.