G'day MrRedd, changing it to version 8 isn't a good idea, as it might make other plugins / theme features unstable. Best is to let WordPress load the version it comes with. It has a bundle of additional jQuery plugins (e.g. jQuery UI) that are tested against specific versions, so you should really only load a newer version if you know what you're doing :)
My code block above stops the exclusive content plugin from running the function cpp_init() which is where it replaces jQuery. If you look a few lines above it, you'll see that there is a call to add_action('init', 'cpp_init'); which tells WordPress to run that function at the "init" action. My code block gets in ahead, and removes cpp_init() from the queue, so it should never run.
cheers,
Ross