Note: Key Name Mod u can have any key name u want .. so i was always using Value 0001.. :P 
its the Key Effects that matters .. 

Key Names
0000 = Key of Different Worlds
0001 = Ice Key
0002 = Volcano Key
0003 = Desert Key
0004 = Time key
0005 = Coin Key
0006 = Smelt Key
0007 = Idol Key
0008 = Ancient Key 
0009 = Knowledge Key
000A = Double Sword Key
000B = Blue Wing Key
000C = Devil's Guardian Key
000D = Wolf Fang Key
000E = Ice Crystal Key
000F = Heavy Drinking Key
0010 = Huge Serpant Key
0011 = Two Spears Key
0012 = Debug Key

Key Effects
0001 = Mpthing 
0002 = Shalulu Island
0003 = Golugore Island
0004 = Garaze Island
0005 = Toriltram Island
0006 = Shop
0007 = Upgrade Weapons
0008 = Pagoras Island
0009 = Elshant Island
000A = Imperion Island
0065 =  Wallace
0066 = Tonaty
0067 = Mue
0068 = Hijikata
0069 = Koyuki
006A = Miss Luwenelva
006B = Orochimaru
006C = Zeonsilt and Corin