Well, First of all thank you for the warm compliments on my website.
The truth is that I did not updated for at least 4 month now :-) I have lots of new things coming in the near future.
About your question.
It is far easier than you would imagine.
Just take your PAGE.PHP , duplicate it , and on the first line, paste :
<?php /* Template Name: page-comments */ ?>
then, where you want the comments to appear , paste :
<div class="TheCOmmentClasssForYOurTheme">
<?php comments_template(); ?>
</div>
Save the new created page as Page-Comments.php in your templarte folder and -
that's all..
Next time you will write a page , or edit a new one, you will be able to choose (from custome page templates) if you want the page to be With Comments, or without ..