Enable UTF-8 support

i saw this feature in the ACP, so i need to know how i can know if my board is under utf-8 (i guess so, but i'm not totally sure) and what changes if i enable this feature ...

thanks

You can look in your pages html source for charset meta tag.

Oleg, you mean this? <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" /> so i don't need to activate that feature, correct?

Yes.