Hey Jonathan,
I can swear that I've already written the reply to your topic and now I'm shocked that it's actually not in the thread and I can't find it in the lazarus DB. Either my brain is playing games on me or technology has failed on me... wow...
So, I see that Josh told you what to do with display of the list. Now to have the fields horizontal you'll have to make a template override for:
components\com_comment\templates\default\default_form.php on line 216 you have this:
<?php if($this->customfieldsForm->getGroup('customfields')) : ?>
<div class="row-fluid offset1 span11 ccomment-actions hide">
<strong><?php echo JText::_('COM_COMMENT_CUSTOM_FIELDS'); ?></strong>
<?php foreach($this->customfieldsForm->getGroup('customfields') as $custom) : ?>
<div class="ccomment-customfields-group">
<?php echo $this->customfieldsForm->getLabel($custom->fieldname, 'customfields'); ?>
<?php echo $this->customfieldsForm->getInput($custom->fieldname, 'customfields'); ?>
</div>
<?php endforeach; ?>
</div>
<?php endif; ?>
That is the part that you need to modify.
Also in your code you won't see:
<strong><?php echo JText::_('COM_COMMENT_CUSTOM_FIELDS'); ?></strong>
For some reason I've hardcoded Custom fields there and that is why you can't translate it.
Regards,
Daniel