So your keybord don't have the characters you are looking for? Follow these four steps to make them:
1. Find the caracter you need below
2. Press the ALT key next to the spacebar on your keyboard and hold it down
3. Enter the decimal code
4. Release the ALT code, and your character will appear
NOTE! When using this utterly out-dated system, there are two important things to remember. First, when you type in the numbers, some keyboards require that you use the "numeric keypad" located to the side, rather than the numbers along the top. Second, on some keyboards, only one of the two Alt keys will work for this.
Lowercase letters:
á = Alt + 0225 (160)
é = Alt + 0233 (130)
í = Alt + 0237 (161)
ó = Alt + 0243 (162)
ú = Alt + 0250 (163)
ñ = Alt + 0241 (164)
ü = Alt + 0252 (129)
Capital letters:
Á = alt + 0193
É = alt + 0201
Í = alt + 0205
Ó = alt + 0211
Ú = alt + 0218
Ñ = alt + 0209
Special characters:
¡ = alt + 0161
¿ = alt + 0191
Lowercase letters:
à = Alt + 0224
â = Alt + 0226
æ = Alt + 0230
ä = Alt + 0280
ç = Alt + 0231
é = Alt + 0233
è = Alt + 0232
ê = Alt + 0234
ë = Alt + 0235
î = Alt + 0238
ï = Alt + 0239
ô = Alt + 0244
œ = Alt + 355
ö = Alt + 0246
ù = Alt + 0249
û = Alt + 0251
ü = Alt + 0252
ÿ = Alt + 0255
Capital letters:
À = Alt + 0192
 = Alt + 0194
Æ = Alt + 0198
Ä = Alt + 0196
Ç = Alt + 0199
É = Alt + 0201
È = Alt + 0200
Ê = Alt + 0202
Ë = Alt + 0203
Î = Alt + 0206
Ï = Alt + 0207
Ô = Alt + 0212
Œ = Alt + 0140
Ö = Alt + 0214
Ù = Alt + 0217
Û = Alt + 0219
Ü = Alt + 0220
Ÿ = Alt + 0159
Lowercase letters:
ä = alt + 0228
ö = alt + 0246
ü = alt + 0252
Capital letters:
Ä = alt + 0196
Ö = alt + 0214
Ü = alt + 0220
Special characters:
ß = alt + 0223
Lowercase letters:
à = Alt + 0224
è = Alt + 0232
é = Alt + 0233
ì = Alt + 0236
í = Alt + 0237
î = Alt + 0238
ò = Alt + 0242
ó = Alt + 0243
ù = Alt + 0249
ú = Alt + 0250
Capital letters:
À = Alt + 0192
È = Alt + 0200
É = Alt + 0201
Ì = Alt + 0204
Í = Alt + 0205
Î = Alt + 0206
Ò = Alt + 0210
Ó = Alt + 0211
Ù = Alt + 0217
Ú = Alt + 0218
Lowercase letters:
á = Alt + 0225
â = Alt + 0226
ã = Alt + 0227
à = Alt + 0224
ç = Alt + 0231
é = Alt + 0233
ê = Alt + 0234
í = Alt + 0237
ó = Alt + 0243
ô = Alt + 0244
õ = Alt + 0245
ú = Alt + 0250
ü = Alt + 0252
Capital letters:
Á = Alt + 0193
 = Alt + 0194
à = Alt + 0195
À = Alt + 0192
Ç = Alt + 0199
É = Alt + 0201
Ê = Alt + 0202
Í = Alt + 0205
Ó = Alt + 0211
Ô = Alt + 0212
Õ = Alt + 0213
Ú = Alt + 0218
Ü = Alt + 0220