Using WP in Joomla powered site

Has anyone tried to use WP in their Joomla site? I am thinking about trying this because the blog features in Joomla 1.5 are seriously lacking.

But I am not an experienced PHP developer so vefore I jump in to an installation, can anyone offer some advice? Joomla sites are usually based around a one page template and this is why i am having trouble envisioning if WP will be easy to integrate.

Thank you