I don't now where the first two are...(look in the source ie:View - Source and vind the words that u need and the css file that managas it or look in the boardindex.php, but firts vind the words in the lng file take the lng code and find it in the boardindex.php)
well the last one.. stats.php or boardindex.php
or you might try css for it...(catbg)
<td class="catbg" colspan="2"><b>Kirjaudu</b>
<a href="
http://www.hoitajat.net/foorumi/index.php?action=reminder;what=input_user"><small>(Unohtuiko salasana?)</small></a></td>
*acf