Wow, could you be any vaguer...
To do the Shadow Temple, you'll need the Lens of Truth - to get it, first learn the Song of Storms. As an Adult, go to the Windmill in Kakariko Village and talk to that crazy dude. Then show him your Ocarina and he'll teach you the song! Go back to being a Kid again, enter the Windmill and play the Song of Storms for the guy and the Well will be drained of it's water. Enter it and find the Lens of Truth...
The Lens of Truth will help you find the Hover Boots and the Hover Boots will help you get through the Temple...
[center]HERE TO ANSWER YOUR GAMING QUESTIONS & HELP YOU BEAT THOSE GAMES!
[color=red][b]2,000+ POINTS & ALWAYS GROWING!!![/color]
I FINALLY GOT MY WII & WII LOVE IT!!!!![/b][/center]