Filter posts on a page for Blogs MU theme

I have posted about this before on the Network theme but I have since decided to switch to the Blogs MU theme. I tried using the same solution on the new theme but it is not working. I'm not real savvy at coding so I thought that I'd get some help.

I copied the Blog page template and created two more page templates: one for pro plugins and one for premium themes. To filter the post categories on each page I inserted the code:

<?php query_posts('category_name=Pro Plugins'); ?>

and

<?php query_posts('category_name=Premium Themes'); ?>

for the respective pages at various places but nothing seemed to work. Here is a link to one of my pages. Any ideas? Thanks for the help.