You need to change:
<td class="tableHeader">Access Level:</td>
<td class="tableData"><?php
$query = "SELECT visitors.VisitorGroupID, groups.GroupName ".
"FROM visitors, groups ".
"WHERE visitors.VisitorGroupID = groups.GroupID";
$result = mysql_query($query) or die(mysql_error());
// Print out the contents of each row into a table
while($row = mysql_fetch_array($result)){
echo $row['GroupName'];
echo "<br />";
}
?></td>
</tr>
<tr>
<td>
to:
<td class="tableHeader">Access Level:</td>
<td class="tableData"><?php
$query = "SELECT visitors.VisitorGroupID, groups.GroupName ".
"FROM visitors, groups ".
"WHERE visitors.VisitorGroupID = groups.GroupID GROUP BY groups.GroupName";
$result = mysql_query($query) or die(mysql_error());
// Print out the contents of each row into a table
while($row = mysql_fetch_array($result)){
echo $row['GroupName'];
echo "<br />";
}
?></td>
</tr>
<tr>
<td>