Problems with Playerprefs script

What is wrong with this script?

var savedTForm00 : Transform; 
private var Scene : String;

function SaveIt00(){///==SAVEIT==/// 
    PlayerPrefs.SetString(Scene);
} 

function LoadIt00(){///==LOADIT==///  
    PlayerPrefs.GetString(Scene);
}
var autoLoad : boolean;

function Start() {
  if(autoLoad==true) {
  LoadIt00();
  }
}
function Update() {
  if(Input.GetKey("m")) {
  SaveIt00();
  }
  if((Input.GetKey("b"))&&(autoLoad==false)) {
  LoadIt00();
  }
}

http://unity3d.com/support/documentation/ScriptReference/PlayerPrefs.SetString.html

SetString takes 2 arguments

SetString (key : string, value : string)

Also GetString returns a string, you need to assign it to something, calling GetString on its own does nothing

e.g.

var levelToLoad : String = PlayerPrefs.GetString("savedLevel");