Question about Polish input method

hi,

I have  xemacs-21.4.12 under RedHat Linux 9 and I have following question:

when I try to have some Polish diactrical characters, such as ą, ę, ć etc. I press right alt + letter (e.g. alt + a to have ą) and there is a message "aogonek not defined". Similar message for other letters:

alt + e = eogonek not defined
alt + l = lstroke not defined
alt + z = zabovedot not defined

describe-language-evironmet gives such result:

-----
Polish language environment

This language environment is a generic one for Latin-2 (ISO-8859-2)
character set which supports the following languages:
 Albanian, Czech, English, German, Hungarian, Polish, Romanian,
 Serbian, Croatian, Slovak, Slovene, Sorbian (upper and lower),
 and Swedish.

Input methods:

Character sets:
  ascii: ASCII (ISO646 IRV)
  latin-iso8859-2: ISO8859-2 (Latin-2)

Coding systems:
  iso-8859-2 (`MIME/Ltn-2' in mode line):
	MIME ISO-8859-2
-----

So it looks like there is no input method for Polish language?
Can you help me?

best regards
Jakub from Poland