Press and hold the "alt" key while entering these numbers on the keypad.
(example: hold the alt key and push 1,6,0 and you should get the "á")
Some word processing programs might require that you use the 4 digit numbers listed below instead of the 3 digit numbers.
Yes, you have to go through the process each time you need to use a special character . . .unless you re-map your keyboard . . .then you'd lose your standard setting for the English language.
160 á (0224)
130 é (0233)
161 í (0237)
164 ñ (0241)
162 ó (0243)
163 ú (0250)
129 ü (0252)
Á (0193)
144 É (0201)
Í (0205)
165 Ñ (0209)
Ó (0211)
Ú (0218)
154 Ü (0220)
168 ¿ (0191)
173 ¡ (0161)