$nickname = $_POST['wgcname'];
$query = mysql_query("SELECT * FROM hostsapp WHERE wgcname='".$nickname."'");
$row_host = mysql_fetch_array($query);
var_dump($row_host);

**************************************************************************************************************
array(228) { [0]=> string(2) "52" ["id"]=> string(2) "52" ... ["t2"]=> string(1) "Y" [20]=> string(1) "N" ... }
**************************************************************************************************************

<input <?php if (!(strcmp($row_host['t2'],"Y"))) {echo "checked=\"checked\"";} ?> type="checkbox" name="t2" value="Y">
	&nbsp;I prefer working on a team rather than by myself</p>