Hi setshot50,
Yes. What you’re trying to accomplish is doable. In fact, integrating WordPress instead of using an iFrame is the best way to get the content (posts) from WordPress without any styling.
The link I mentioned previously provides great info, but perhaps some additional amplification will help you get going.
First things first: you’re going to want to change that .html file into a .php file.
Then, at the top of the file, you’ll want to include this bit of code before your HTML output starts (even before the <!DOCTYPE> declaration:
<?php
require('/the/path/to/your/wp-blog-header.php');
?>
Obviously you need to change the path there. From what I can see for the page you linked to, it might look like this:
<?php
require('../../../wp-blog-header.php');
?>
This code essentially “calls” WordPress and says “I’m planning to query you on this page.”
Then, once you get to the portion of your page where you’d like the posts to appear, you could use code like this;
// Get the last 3 posts.
<?php
global $post;
$args = array( 'posts_per_page' => 3 );
$myposts = get_posts( $args );
foreach( $myposts as $post ) : setup_postdata($post); ?>
<a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><?php the_title(); ?></a><br />
<?php endforeach; ?>
This code (above) is a very, very basic version of what is known in WordPress parlance as “The Loop.” It is highly, highly customizable.
The super-simple version above would pull up the last 3 posts and output them into your page’s html code.
For starters, you could try putting that code into your page after this line: <div class="innercontent">
Everything coming out of WordPress at that point would obey the CSS rules for your “innercontent” ID.
If you wanted the WordPress post titles to have an <h2> tag, then you would modify the above code as follows:
// Get the last 3 posts.
<?php
global $post;
$args = array( 'posts_per_page' => 3 );
$myposts = get_posts( $args );
foreach( $myposts as $post ) : setup_postdata($post); ?>
<a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><h2><?php the_title(); ?></h2></a><br />
<?php endforeach; ?>
The options you have are (nearly) endless. You can display an excerpt of your post(s), the entire post content, permalinks to the posts with the titles, only the titles (with or without links), and additional stuff like your category(-ies), tags, author(s), etc.
If you’d like to give this a shot and let me know if you have specific questions about modifications you’d like to make, I’d be glad to provide some additional help.