No it's not that, sorry to intefer MrGrey, the thing is you forgot to stop the <tr> tag
Look:
<tr class="header">
<td rowspan="6" bgcolor="#330000" valign="top" width="86"><font face="Arial, Helvetica, sans-serif" size="2" color="#FF0000">Command</font>
</td>
<td valign="middle" width="116"> <div align="left"><font face="Arial, Helvetica, sans-serif" size="2" color="#FF0000"><a href="st_stocker.html" target="stocker" onclick="MM_openBrWindow('st_stocker.html','stocker','scrollbars=yes,resizable=yes,width=450,height=700')">Antdony
J. Stocker</a></font></div>
</td>
<td valign="middle" width="115">
<div align="center"> <font face="Arial, Helvetica, sans-serif" size="2" color="#FF0000"><img src="R-0000.jpg" width="110" height="24"></font></div>
</td>
<td valign="middle" width="160">
<div align="left"> <font face="Arial, Helvetica, sans-serif" size="2" color="#FF0000">Commanding
Officer</font></div>
</td>
<td valign="middle" width="84">
<div align="center"><font face="Arial, Helvetica, sans-serif" size="2" color="#FF0000">Human</font></div>
</td>
<td valign="middle" width="40">
<div align="right"> <font face="Arial, Helvetica, sans-serif" size="2" color="#FF0000">Male</font></div>
</td>
</tr>
So all of your <tr> has the "header" class you need to apply the class only to the <td>
Have Fun...
Sharky99 >

:O>