sorting in another language(polish)

Hi,
I've got a problem to sort polish strings in my grid. It sorts english letters first :( . I can see polish letters but not in properly order [a,b,c,...,y,z,¹,æ,ê,³,ñ,ó,œ,Ÿ,¿].
I'll presuate any advices how to fix that.
Thanks!