this?
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>Table with borders</title>
<style type="text/css">
<!--
table {
margin: 0;
padding: 0;
}
td {
width: 5em;
padding: 2px;
border-top: 1px solid black;
border-left: 1px dashed black;
}
-->
</style>
</head>
<body>
<table cellspacing="0">
<tr>
<td>A1</td>
<td>B1</td>
<td>C1</td>
</tr>
<tr>
<td>A2</td>
<td>B2</td>
<td>C2</td>
</tr>
<tr>
<td>A3</td>
<td>B3</td>
<td>C3</td>
</tr>
</body>
</html>
I didn't use CSS2 stuff, just basic CSS1 borders; I don't know if there's a viable CSS property as alternative for the cellspacing attribute, but I thought it wasn't deprecated yet.