Bueno Theme – How to change Title in Header?

well….I don’t know that theme specifically, a link to your site could help. Here’s a way to do it to have your title and tagline, but not have them showing on the page

adding this to the appropriate place in your header will show the title and tagline:

<div class="blogname">
		<h1><a href="<?php bloginfo('siteurl');?>/" title="<?php bloginfo('name');?>"><?php bloginfo('name');?></a></h1>
		<h2><?php bloginfo('description'); ?></h2>
	</div>

Now you need to add #blogname to your style.css, and you are free to style it as you like (margins, etc to position it)

But, if you like the way your site looks and don’t want the title and tagline to actually show (but want them for SEO) style like this in css:

#blogname {
    text-indent: -9999em;
    }

this will move everything off the page