Typing Spanish characters:
Hold down the "Alt" key 
and press on the keypad (NumLock on):

á-0225		Á-0193
é-0233		É-0201
í-0237		Í-0205
ó-0243		Ó-0211
ú-0250		ü-0252		Ú-0218
ñ-0241		Ñ-0209
¡ -0161		¿ -0191