hi, i want to add adsense code just before the comments start on single post pages, or may be add a widget area above the comments... how is it possible? please help

atahualpa 3.4.4
wp 2.8.3

Well if you don't mind it being above the 'footer' line, you could just add a new widget area in 'The LOOP' just above the line

<?php bfa_post_footer('<div class="post-footer">','</div>'); ?>

when i am adding a new widgte area in the loop above the footer, then the widget area appears on home page also, i just want it to show on single post pages

put a condition on the statement - read the documentation on the page

umm sorry but i lost you on this

Go to ATO->Style & edit CENTER COLUMN->The LOOP and read what it says...look at the examples