Comment on WordPress Hacks by SEO Dave.

WordPress Hacks Adding a Google Custom Search form to Talian would require editing the code.

The file to edit is header.php and the code to change

<div id="searchform">
<form method="get" action="<?php echo $_SERVER['PHP_SELF']; ?>">
<input name="submit" type="image" src="<?php bloginfo('stylesheet_directory');?><?php _e('/images/' . themecolor() . '/search_button.gif'); ?>" alt="Search <?php bloginfo('name'); ?>" />
<p><input name="s" type="text" class="src_field" value="<?php the_search_query(); ?>" /></p>

I’d start with getting a Google Custom Search Form code from your AdSense account and paste it over the form code keeping the top and bottom div parts.

Not tested this, but should work.

Repeat in the file header2.php if you use the SEO Super Comments plugin bundled with Talian 5.

This is built into Stallion 7 with options to set your AdSense ID etc…