Hi blondie,
It is really quite dark in this part of the game-- raise your brightness control.
When you go down to the courtyard, the queen will start screeching for you to be taken by the guards.
Turn right and see barrels, lil to the right.
Go to inventory (hopefully you have correctly loaded your gun).
Click on the gun and it will be seen on the frame.
Click on hand icon to take gun.
Move cursor to barrels and click-shoot. Explosion time!!
I have the saved game and will sent it to you now - this is after the talk with the ghost and just the start of the next time period.
Good luck!
MaG