Customizing & Adding Adsense To Your Wordpress Blog
There will probably be a text file that was included with your wordpress theme with some instructions on how to customize that particular theme. Aside from that, here are a few things I wasn’t able to find in any Help or Read Me files.
Using SSI (server side includes) to implement Adsense, other javascript, or images on your site:
Why would you want to use SSI? It allows you to change which ad or picture you are using without having to edit your template every time. Plus, if you are using a javascript code on several websites, you can edit that file in your cpanel and it will instantly make that change on every page or website that uses that file as a reference for the code.