[development] D6 Views 2 adding filter programmatically

I have a block view set up, but I need to add a filter that uses a value from the node. Adding a dynamic value to the filter seems pretty straight forward: $view = views_get_view('related_cities'); $display = 'block_1'; $view->set_display($display); $filter_name = 'field_city_parent_id_value'; $filter = $view->get_item($display, 'filter', $filter_name); $filter['value'] = 'my_new_search_value'; $view->set_item($display, 'filter', 'field_city_parent_id_value', $filter); Problem is that I don't know where I should be running this code. Module or template? If I put it into a module, which function should it go in? I've tried it in hook_views_pre_render(), but I'm not sure how to get the results based on the new value. Thoughts?