how can we add adsense code in our website

<table><tr> <td width="17%"><span><strong>Visitors after27-12-08</strong><br /> <a target="_top" href="http://xyz.freelogs.com/stats/m/mr11946/"> <img src="http://xyz.freelogs.com/counter/index.php?u=mr11946&s=goldodo" alt="Visitors of this website" vspace="2" align="middle" border="0" hspace="4" /></a> <script src="http://xyz.freelogs.com/counter/script.php?u=mr11946"></script></span></td> <td align="center" height="90"> <script type="text/javascript"><!-- google_ad_client = "pub-6485082693273676"; /* 728x90, Urduadsense_upsite */ google_ad_slot = "4238407488"; google_ad_width = 728; google_ad_height = 90; //--> </script> <script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"> </script><br /> </td></tr></table>