How to add\change a logo in word press

I am using word press to host my blog I just upgraded to 2.7 also.
I had a logo created for me from a forum member now I would like to import that logo into my word press theme. How would I go about doing that.

I would like it in the header or even as a background image on every page behind the post would be cool. my blog is below

www.iamspeaking.net

 

1) Upload your logo to /public_html/images
2) Log into your wp-admin and navigate to -->Design -->Theme Editor. Click on Header template (header.php) and look for this code:

<h1><a class="mainlink" href="http://www.iamspeaking.net/">Iamspeaking.net</a></h1>

Code (markup):

Then add the following either before or after that line.

<img src="<?php echo get_settings('home'); ?>/images/your_logo.jpg" width="" height="" border="0" title="">

Code (markup):

Adjust as necessary.

 

Thanks I will give it a shot.