World archives Project: Alternate keyboards
Speed of data entry on foreign-language projects may greatly be improved by setting up an alternate keyboard that supports the language.
For Polish I recommend the Polish Programmers keyboard as it is basically a standard QWERTY keyboard with the Polish characters entered by use of the RIGHT-ALT+Letter combinations. This key is called AltGR (or Green Key, as it is color coded on the keyboards that ship this way).
To get the capital letters, simply press shift, and the appropriate AltGr combination
To set this up see the following article