Here is a guide how you add a FreeShoutbox.net shoutbox to your Blogger blog.

1. Create a free shoutbox at http://www.freeshoutbox.net/
2. Login to blogger, go to "Manage layout" for your blog (it may also be called "Template" depending on which Blogger page you are at).
3. Press "Add a Page Element" shown in the sidebar layout.
4. In the page that pops up, select "HTML/Javascript".
5. At the next page, fill in "Shoutbox" or something similar as title and paste the HTML-code you get when logging in to freeshoutbox.net in the content field.
6. Save and check your blog, you'll probably have to edit the HTML-code and change the height and width parameters to fit your blog, I found that width 250 seems to be fine for this blog's sidebar.

I hope you find this useful, feel free to add any questions as comments to this blog post or in the support forum.