At the Dam and Daily Planet use Freeze Breath to stop the bombs.
After getting the option to save your game hit reset. Now go to Load Game and when it asks you to put in the rumble pak hold L B for a few seconds and press A.
At the Title screen press and hold A B CDown CUp then press Start.
At the Main Menu press CUp CDown CLeft CRight CRight. Begin a new game and press Start CUp CDown.