Water Slowing...

How can, once you character enters a pool of water slow down, and make a sound?

var poolOfWater : String = "Pool";

function OnCollisionStart(collision : Collision)
{
    if (collision.gameObject.name == poolOfWater)
    {
        //Set speed to w/e and play sound
    }

}

A start maybe?

Give the water a trigger.

clarify w/e .......

Guy i need do something look like that nut for C Sharp. Anybody can help me?