Adding second blog to wordpress site

Hi,

I’m trying to add a second blog to my wordpress site. I copied the index.php page and made changes by replacing this code:

<?php if (have_posts()) : while (have_posts()) : the_post(); ?>

with this code:

<?php
$temp = $wp_query;
$wp_query= null;
$wp_query = new WP_Query();
$wp_query->query(‘posts_per_page=5′.’&paged=’.$paged);
while ($wp_query->have_posts()) : $wp_query->the_post();
?>

I also replaced

<?php endif; ?>

with

<?php $wp_query = null; $wp_query = $temp;?>.

Then I saved as blog.php and uploaded it to my theme directory as a template. Then I applied that new template to my blog page. When I loaded the blog page afterwards, however, it had the same posts as my front page. So basically, the second blog I created is identical to the front page. How do I separate the blogs and have totally different posts on the two pages? Any help would be appreciated. Thanks.