Change permalink custom post type category

Hi,

I’m really excited about the custom post type together with custom taxonomies. Still, having problems having the features play well together. Maybe someone can explain what I’m missing.

I’ve create a ‘Custom Post Type’ called Tips.

function post_type_tips() {
	register_post_type('blog_tips',
		array( 'label' => __('Tips'),
			  'singular_label' => __('Tip'),
			  'public' => true,
			  'menu_position' => 8,
			  'rewrite' => array('slug'=>'tips'),
			  'show_ui' => true
		)
	);
}

Added some taxonomy (categories for the tips)

function post_type_tips_taxonomies() {
	  register_taxonomy_for_object_type('category', 'blog_tips');
}

Creating tips attached to categories works very well and are really easy, but I want to create the following urls:

• https://localhost/blog/tips
• https://localhost/blog/tips/category
• https://localhost/blog/tips/category/post

The first page ‘tips’ is no problem. I can loop over the categories with the function ‘wp_list_categories’ but how can I change the URL of the categories? I can’t find a way to rewrite that url.

Hope someone can help. Thanks in advance.