Need a quick way to set FeedBurner as your default RSS feed provider without messing around with Plugins and Redirects? Here is how to easily configure your WordPress blog to deliver FeedBurner to all your users.
Open your header.php file and look for a line of code that looks similar to this:
<link rel=“alternate” type=“application/rss+xml” title=“<?php bloginfo(‘name’);> RSS Feed” href=“<?php bloginfo(‘rss2_url’); ?>” / >
I say similar as it may be a bit different from theme to theme. In fact some themes may not even include the RSS inclusion link. Simply replace this:
<?php bloginfo(‘rss2_url’); ?>
With your FeedBurner URL:
http://feeds2.feedburner.com/iniwoonet
So in the end you end up with something that looks like this:
<link rel=“alternate” type=“application/rss+xml” title=“<?php bloginfo(‘name’);> RSS Feed” href=“http://feeds2.feedburner.com/iniwoonet” />
Save your header.php file and upload it to your theme folder. This is a quick and easy way to replace the default RSS link with your custom FeedBurner RSS link for a new or existing blog without having to mess with plugins to accomplish the job.
Source: WP-Tips