@khendar While adding a line-height may be a simple fix I think the position:relative; fix is better as it still uses the browsers default rendering mode rather than setting a line-height
Wow, your code was a mess. Use this for your CSS
html, body {margin: 0; padding: 0; border: 0;}
#mmcHeader {margin: 0 auto; padding: 10px 0 5px 0; text-align: center; color: #603; background-color: #E4DAD8;}
#mmcPageBody {font-family: Arial, Helvetica, sans-serif; font-weight: normal; font-size: 13px; text-align: left; color: #603; background: #E4DAD8; margin: 0 auto; padding: 0 5px 5px 0;}
#mmcMainPic {float: left; padding: 0 0 10px 0; margin: 0 15px 0 10px;}
.mmcTitle {font-size: 16px; font-weight: bold; position: relative;}
.mmcDesc {font-size: 14px; position: relative;}
.mmcDetails {clear: both;}
.mmcExtraPic {clear: both; padding: 10px 10px 0 10px;}
.mmcPolHead {clear: both; font-weight: bold; font-size: 15px; text-align: center; margin: 5px 0 5px 0;}
.mmcPolicies {font-size: 14px; color: #603; background: #F2F2F2; border: 1px #000 solid; padding: 5px; margin: 0 0 0 5px; text-align: left;}
A.mmc:link {text-decoration: none; color: #660033; background: #F2F2F2;}
A.mmc:visited {text-decoration: none; color: #660033; background: #F2F2F2;}
A.mmc:hover {text-decoration: underline; color: #555555; background: #F2F2F2;}
A.mmc:active {text-decoration: none; color: #660033; background: #F2F2F2;}
Notice the position:relative; I added to a few of your rules. This fixes the text not showing up. Its a variation of the peekaboo bug. The fix is to add position:relative; to that element. Now as far as your markup. You had no body tags, no head tags, no html tags, no doctype. These are all things you should have in your page. When using inline CSS, meaning using style="" you don't put the {} brackets in there. Try this for your HTML.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title>MMC Listings</title>
<link href="Styles/mmc-Listings.css" rel="stylesheet" type="text/css">
</head>
<body>
<div id="mmcHeader"><img src="Images/martinsmountainSpecial.gif"></div>
<div id="mmcPageBody">
<div id="mmcMainPic" style="background-image: url(Images/ProdPics/104657-Proto-Louise-Front1.jpg); background-repeat: no-repeat;"><img src="Images/Copyright_Martins_Mountain.gif" width="460" height="460" alt="Main Product Picture"></div>
<div class="mmcTitle">Enesco Cherished Teddies<br>LOUISE PROTOTYPE - #104657 </div>
<div class="mmcDesc">"Friends Were Meant For Times Like These"
<p>Frolic In The Forest Series</p>
<p>Year Mark: PROTOTYPE<br>Figurine: Mint *Prototypes are pre-production samples a<br>Box: None</p>
<p>Dimensions: 4 inches tall</p>
<p>An adorable Cherished Teddies figurine showing a little Teddy girl and her puppy going for a walk in the snow. Both dressed in green knitted sweaters, they are truly precious!</p>
<p>One of two 'first in series', Louise was introduced in 2002 and stands 4 inches tall.</p>
<p>A special piece for a collector of CT variations, errors and prototypes!</p>
</div>
<div class="mmcDetails"> </div>
<div class="mmcExtraPic" style="background-position: center center; background-image: url(http://martinsmtn.com/Images/ProdPics/104657-Proto-Louise-Front2.jpg); background-repeat: no-repeat;"><img class="mmcExtraPic" src="Images/Copyright_Martins_Mountain.gif" width="460" height="460" alt="Additional Product Picture"></div>
<div class="mmcPolHead">Payment Options</div>
<div class="mmcPolicies"><b>PAYMENT TYPES ACCEPTED</b>
<p>Other text goes here.</p>
<p>If you have any questions, please <b><a class="mmc" href="mailto:questions@xxxxxx.xxx">Click here to email us</a></b>. </p>
</div>
<div class="mmcPolHead">Shipping Policies</div>
<div class="mmcPolicies"><b>GENERAL SHIPPING INFORMATION</b>
<p>More text goes here.</p>
<p><b><a class="mmc" href="mailto:questions@xxxxxx.xxx">Click here to email us for additional information</a></b>.</p>
</div>
</div>
</body>
</html>