Ok, I have added a custom field for profiles, but the default is just a single short line. I want to make this a large box similar to the "Bio" box. I know it should be fairly simple, which template and what would I change?

You'll have to change it in editbasic.php cause the extra-fields are formated there and not in the templates.<br />Around line 149 find:<br /><br /> if ($config['extra2']) {<br /> $extra2 = "<br />{$config['extra2']}<br /><br /><br /><input type=\"text\" name=\"Extra2\" value=\"$Extra2\" class=\"formboxes\" /><br /><br />and change it to:<br /> if ($config['extra2']) {<br /> $extra2 = "<br />{$config['extra2']}<br /><br /><br /><textarea name=\"Extra2\" cols=\"$TextCols\" rows=\"$TextRows\" wrap=\"soft\" class=\"formboxes\">$Extra2</textarea><br /><br />You may want to put in customs values for "cols" and "rows" to fit the size to your needs.

worked great, thanks!