I guess you have preinstalled operating system. Go to control panels / Regional settings / Last tab Change settings for nonunicode applications to e.g. English, confirm, restart Change settings for nonunicode applications back to Polish, confirm, restart
This will fix Windows Locale settings not for PSPad only, but for all applications -- <http://forum.pspad.com/read.php?2,67102,67103> PSPad freeware editor http://www.pspad.com
