How Do I Make Model # a link on the Invoice so it searches the site

[stevenlee]

I need to make the model number into a link that will search the site
example:

site.com/index.php?main_page=advanced_search_result&search_in_description=1&keyword=(Model Goes Here)

I see this line in the admin/invoice.php

<td class="dataTableContent" valign="top">' . $order->products[$i]['model'] . '</td>' . "\n"; 

but I'm unsure as to how to edit it, has anyone ever done this modification before?

thank you,
Steve