Im in just the begining of Hi-tech terror and how do you get past the security cameras, the guard keeps catching me because of them. Can someone help?

Go to the walkthrough guides in the site, Very useful.

Hi, do you see a door with a picture with an eight ball on it? do though there, next sneak past the gard, once uve done that, go through a little area were you will find a clue and disguise box to get, next go to the staff room, and put on the disguieses there, go out through everythiong eles AND WHEN YOU GET TO THE SECURITY CAMERA AREA,go to the very very, tip of the camera, put on the diguise and go to the elevator from there. ur welcome.

Ive gotten past the gaurds and through all the rooms in the lab costumes and im in the room with the security cameras and one discuise box. i can seem to get to the discuise box without being caught by the camera how do i get past the camera and get the discuises on?