Question : navigation bumps down in ie

Trying to fix this low budget website. The nav structure in ie 6 bumps down by 1/2"

I tried fixing it but nothing i am doing is working. I know it is an ie issue. Any ideas?
http://nsitedesigns.com/nsitedesigns/sttom/test2.html
http://nsitedesigns.com/nsitedesigns/sttom/sttom.css

I think it has something to do with the coding for the address line in the yellow box in the header.

.thrColFixHdr #header p {
      padding: 0; /* using padding instead of margin will allow you to keep the element away from the edges of the div */
      color:#000; /*dark green*/
      margin:20px 0px 20px 20px;

}

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#navigation {
	width: 90px;
	float:left;
	display:inline; /*needed to push navigation bar away from content*/
	padding-left: 40px;
	margin-bottom:50px; /* pushes nail photo down*/
	font-size:.9em;
	margin-right:20px;
	
	
}

#navigation ul {
	list-style: none;
	padding: 0px;
	font-size: 1.1em;
	margin:0px;
	
}

#navigation li {
padding-top:0px;
	margin-top:0px;
	float:left;/*needed for nav to fit in ie6 and to keep the hours on the left*/
	width:100%;/*needed for nav to fit in ie6 and to keep the hours on the left*/}
	
	
	
#navigation li a:link, #navigation li a:visited  {
	display: block;
	text-decoration: none;
	padding: 3px 0px 3px 0px;
		color:#000;
	border-top: 1px solid #ffffff; /*invisible border to compenstate for mouseover jiggle*/
	border-bottom: 1px solid #ffffff; /*invisible border to compenstate for mouseover jiggle*/}
	

#navigation li a:hover {
	background-color:#ebebc2;
	border-top: 1px solid #314c5e; /*mouseover*/
	border-bottom: 1px solid #314c5e; /*mouseover*/
	
}

.thrColFixHdr #header p { 
	padding: 0; /* using padding instead of margin will allow you to keep the element away from the edges of the div */
	color:#000; /*dark green*/
	margin:20px 0px 20px 20px;
	
}

Answer : navigation bumps down in ie

Look in the conditional comment.

P.S. Normally the main stylesheet comes before the IE-only stylesheets.

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<!--[if IE]>
<style type="text/css"> 
/* place css fixes for all versions of IE in this conditional comment */
.thrColFixHdr #sidebar2, .thrColFixHdr #sidebar1 { padding-top: 30px; }
.thrColFixHdr #mainContent { zoom: 1; }
/* the above proprietary zoom property gives IE the hasLayout it needs to avoid several bugs */
</style>
<![endif]-->