how to place ads in post

now i am placing afs in post


<script type="text/javascript"><!-- google_ad_client = "ca-pub-2006075682490471"; /* s */ google_ad_slot = "1959831516"; google_ad_width = 728; google_ad_height = 15; //--> </script> <script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"> </script>


here my ad goes
asdf
sadf
asdf