HELP! I need to move my ad placement down the page

I have my adsense placed on the left side of single.php page, but i want to move it down further down the page without moving the content down, how would i do this?? thanks guys!!

<!– Vertical adsense –>

<div style=”clear:both”></div>

<div style=”float:left;margin:0 0 0 -140px;”>
<script type=”text/javascript”><!–
google_ad_client = “pub-xxxxxxxxxxxxxx”;
/* 120×600, created 4/12/11 */
google_ad_slot = “xxxxxxxxxx”;
google_ad_width = 120;
google_ad_height = 600;
//–>
</script>
<script type=”text/javascript”
src=”https://pagead2.googlesyndication.com/pagead/show_ads.js”&gt;
</script>
</div>