Where is the multi-laser room on the death star in Star Wars the force unleashed

I don't know how far you've reached on the level so I'll just describe what i did while playing on the XBox 360. Starting in the hanger move over to the glowing floor and press force repulse to break the floor and drop through. This skips the whole shoot-out in the hanger and skips a lot of game-play time. You're now in the laser tunnel. To progress through this tunnel you can dodge the laser by hiding in alcoves in the wall. Along here there are large green piece of glass you can break to progress to the next part of the tunnel. About half way down there are two large chambers, when you reach the first one, wait for the laser to go, then stop, now use the force grip power while looking at the first chamber, and move each of the three spinning rings into the same position and then the walkways will appear, quickly go through to the halfway section and do this again for the second chamber. Once you've passed these chambers you'll meet a dead end, but there's a doorway to the right of this short tunnel which you pass through. Once through here you meet some Stormtroopers with flamethrowers, i hate these guys because you can't block fire with your lightsaber. Once you've beaten these guys, using your range of force abilities and your lightsaber, there's a doorway on one of the walls which you will need to use the force on, once you pass through these doors you're inside the multi-laser room. Congrats. But there's still work to do. Now you're faced with two AT-STs, but don't worry about defeating them both, only one of them is necessary, then use force grip on the glowing block against the wall to make 6 or 7 rings fly up from the ground where you can float to the top of the multi-laser room. Once you get to the top you're faced with Stormtroopers with jetpacks, since you cant use your lightsaber for this, you can use force lightning, force push, or wait for the laser to fire again and use force grip to push them into it (my personal faveourite as they fry lol) and then make your way to the large window where Royal Guards appear from, fight them and kill them all, now you can deal with any other Troopers around the room, or go through to fight Vader and/or the Emperor by using force grip and spinning the locking device around and opening the door.