In your content.php file will be the code
<footer class="entry-meta entry-footer">
This displays the category and tags part of your post, copy and paste the comments code (the one you mention above) after the </footer>
You will need to adjust the CSS for comments-link to get the correct padding, text alignment etc.
But as Maruti says, when people have read the whole post the comments form will be there.
Try using the YD Recent Posts Widget, on the FAQ page it explains how to display posts for just on Category.
Do you still need help with this. Can you provide a link for me to look at?
