Damit keiner meckert, hier der Code nochmal ganz korrekt:
<style type='text/css'>
body, html, table, .t100 {height:100%}
body {margin:0; padding:0}
</style>
<table border>
<tr class="t100">
<td class="t100">
<table border width="777">
<tr class="t100">
<td class="t100">
<table border width="190">
<tr><td style="height:85px">1.Zeile</td></tr>
<tr><td style="height:25px">2. Zeile</td></tr>
<tr><td>3. Zeile</td></tr>
</table>
</td>
</tr>
</table>
</td>
</tr>
</table>
tschüs, jürgen