Atahualpa 3.3.3:
Tell us how to edit the index.php to insert a banner between each posts?

Thank in advance!

You don't need to edit the index.php, you can add code to the footer of each post. see ATO->Post/Page info Items

Ok. But here another problem:

Ignored my php code, even though the "Post / Page info Items" is written that: "In regular WordPress (but not in WPMU), you can use PHP code, too. Write the PHP code in the usual way, with opening and closing PHP tags. "

Code which I try to insert: <br /> <? Php echo adrotate_banner ('4 ');?> (using AdRotate)

Sorry. Solved. It was my mistake.