cs(s) question

rookie css/html/js/php genie here

trying to design a nice looking webpage using a table  but can't exactly figure out how to get a horizontal rule for my <th> tag and a verticle bar for regular table body tages

kind of like

__________header_____
 bullshit  | info

using css

as when I


<table>
<tr>
<th> header </th>
</tr>
<tr>
<td border = "1px">  bullshit </td>
<td> info </td> 
</tr>

it expands the first td cell to the size of the first th cell

leaving the css out for the time being until I figure out the html....

I love you...

<th colspan="2">
Just learned this from a tutorial.