OK, do you remember the room where you came down the broken stair case. That's where the elevator is. Since there is 3 visible exit taking 3 out of 4 walls, you should be able to figure out where the elevator and where the crystal recepticle are.
If you can't figure it out, drop us another line.
BTW: welcome to both of you and hope you'll have great time playing this great game.
Edited: sorry, my mistake
[This message has been edited by Ryanamur (edited 07-16-2001).]