No, that is not practical.
The columns were swapped once, they can be swapped back. First make a copy of tpl_main_page,php, and name it tpl_main_page.bak. This will protect you in case you mess up.
In tpl_main_page,php, find the <td id="navColumnTwo"... tag. Now go down the file until you see a </td> tag. That entire section is what you want to move.
Locating the spot to move it to will be a little trickier, as there may not be such good landmarks.
Find this near the bottom of tpl_main_page.php:
PHP Code:
</div>
</td>
<td width="5"><img src="includes/templates/theme028/images/spacer.gif" alt="" width="5px" height="3px" /></td>
</tr>
</table>
It probably won't look exactly like that, because there will be some PHP code in the file, but the important part is the </td> and </tr> tags on their own lines just before the </table>.
(The "<td width="5"><img src="includes/templates/theme028/images/spacer.gif" alt="" width="5px" height="3px" /></td>" is a TM stupidity that they think they need to use instead of giving a margin to the footer. You can delete it or ignore it.)
Cut and past the whole section described above, putting it just after the solitary </td>.
That's it!