Table Column Headers To Always Stay On Page

I'm sure it will be php code that will enable me to complete the following:

print"<table border=1 FRAME=BOX CELLPADDING=2>";

print"<tr BGCOLOR=#0CADE4>";
print"<td width=&#3930;px'>";
print"<div class=white ALIGN=CENTER>";
print"<strong>Select</strong>";
print"</font>";
print"</div>";
print"</td>";

print"<td width=ï`px'>";
print"<div class=white ALIGN=CENTER>";
print"<strong>Casino Name</strong>";
print"</div>";
print"</td>";

print"<td width=&#3960;px'>";
print"<div class=white ALIGN=CENTER>";
print"<strong>Download <br> Software</strong>";
print"</div>";
print"</td></tr>";

$username = "username";
$password = "password";
$database = "database";

#CONNECT TO MYSQL
$dbcnx = @mysql_connect('mysql5.streamline.net',$username,$password) or die("Unable to connect to MySQL");

#CONNECT TO DATABASE
@mysql_select_db($database) or die( "Unable to select database");

$result = mysql_query($sql);

if (!$result) { echo("<P>Error performing query: " . mysql_error() . "</P>"); exit(); }
$i = 0;

while ( $row = mysql_fetch_array($result) ) {

$i ++;
echo "<tr>";
echo "<td BORDERCOLOR=#9B9B9B ALIGN=CENTER>";
echo "<INPUT TYPE=checkbox NAME='" .$i. "' value=".$row['id']. ">";
echo "</td>";

echo "<td class=blue3 ALIGN=CENTER width=100px>";
echo "<div align=left>";
echo "<a href=" .$row['textlink']. " target='_blank'>";
echo $row["name"];
echo "</a>";
echo "</div>";
echo "</td>";

echo "<td class=blue3 ALIGN=CENTER>";

if ($row['downlandlink'] != &#390;'){
echo "<a href=" .$row['downlandlink']. " target='_blank'>";
echo "<img src='./images/download.jpg' border=0>";
echo "</a>";
}
echo "</td></tr>";

}
?>
</table>

Because there are loads and loads of rows added to the table, when scrollong down the table, the header columns dissapear. Is there any way of making the header column always appear on the page when scrolling down to the bottom of the page?