WordPress.org

My code isn't being highlighted

This might mean that the theme you are using doesn't call wpfooter before the closing body tag. The javascript that applies the highlighter is attached to the wpfooter action - either try another theme (the default wordpress theme will work) or add the theme by typing the following inside the closing body tag:

<?php wp_footer(); ?>

My code should be formatted as *x, but is showing up as plain*

If you are specifying a format, are you using one from the available formats list (see the Description page)? If you are not specifying a format, does the file have a correct extension for the file type or is the web page returning with the correct Content-Type header?

I'm still stuck

Get in touch, I'll see what I can do!