Sorry ... I'm a newbie myself in everything but what it says on the left of this page!
In the original code above in Modules/Manufacturers/customer_manufacturers_list.tpl you''ll see this line about three-quarters of the way down:
<tr><td align="center" valign="middle">
insert a new line of code in after that line like this:
<div align="center">
then look for the closing </A> tag which is in the fourth line down after that new line you have just entered, and after the tag put </div>
so now the line in question should look like this:
[/b]</font></A></div></td></tr></table>
Changing the font size is an optional nicety - I would try this first and make sure it works for you.