How To Get To The Aquarium (racetrack key)
First go to lara`s bedroom get the flares from the closet.
Go to the attic and push the green box as far as it will go. Next go to the library on down the hall,their is a brown book sticking out push it in and the fire will go out.
Climb up the wall in the fireplace go down the passage way now their are two boxes pull the first one and there is some flares under it. Now push the second box out of the way.
Turn around and pull the lever while they show the door open press the circle button and run fast run down the attic stairs, jump over the rails and keep running down the stairs dash again through the door before it closes.
When inside get the flares and press the lever and go down the steps until you reach the aquarium.
There is another green box pull the box down a little bit and look up and see if the box is even with the hole in the ceiling.
Now jump up on the box grab the edge and walk to the hole and jump in,go to the other side and their is the racetrack key.
Swim back to the hole where you were just was and get out. Go back to the house,go outside to the gate press the action button and you just unlocked the racetrack.
If anyone knows were the shotgun is in Lara`s house please post on this site!