eVaoVe,
Theres a spring loaded screw, At the bottom of the HD cage, remove this first (careful, don't lose the tiny spring!) and gently pull out the cage.. I say gently because the Tsunami's thin aluminum flexs/bends easily...
Then you need to remove the front bezel to access the front fan screws.. You do this by opening the bezel all the way, then lift it off it's hinges... careful, theres a wire lead attached for the bezel LEDs..