Change keyboard layout

[pch0317 <pch0317@gmail.com>]

Hi list
I have problem with changing my keyboadr layout.
I want to change it to polish, so I type ''dpkg-reconfigure 
console-data'' and choose ''qwert'' and ''polish''.
But still I can't type my symbol.
What I can do?
I use Debian testing amd64.

Thanks