Here it is: Polish and Czech versions of the game: http://www.megaupload.com/?d=6KJTT4GK
(Polish, with voice acting). http://www.megaupload.com/?d=EI0KKHFD
Of course, you need DosBox to launch the game. The easiest way is creating a shortcut, like this one used in GOG games. I reused conf file from GOG English version.
Target element (element docelowy):
%DOSBOX%\doxbox.exe -conf dosboxTeenagent.conf -noconsole -c "exit"
Begin in (rozpocznij w):
1. %DOSBOX% - folder with installed dosbox (not included with the game).
2. %Teenagent% - folder with game (after downloading it, use WinRAR to unzip the RAR file).
3. Technically, uploading the game in different languages (Polish and Czech) should be legal, because Teenagent is freeware. However, GOG offers only English version of the game.
4. Need more help? Feel free to ask.