Displaying a field as a hyperlink from another field?

I have this table.
http://img510.imageshack.us/img510/1538/74049939.jpg


I have the following code:

echo "<td>$row[nation]</td>";
echo "<td>$row[area]</td>";
echo "<td>$row[capital]</td>";
echo "<td>$row[population]</td>";
echo "<td>$row[gdp]</td>";

I need the table to display the 'nation' field, but as a hyperlink taken from another field called 'url'. But I don't understand what code to use. I'm confused. Thanks.

Try this:$url="#";
echo "<a href='$url'>".$row['nation']."</a>";