I use fishpig wordpress integration with addons contact form 7
documentation say this
To do this, you can make use of the Widget block (code below).
<reference name="content">
<block type="wp_addon_cf7/widget" name="cf7.test.form">
<action method="setFormId"><form_id>4</form_id></action>
</block>
</reference>
To use the above code, simply change the number 4 for the ID of your form.
To display a form using PHP instead of XML, see the code below.
<?php $layout = Mage::getSingleton('core/layout') ?>
<?php $formBlock = $layout->createBlock('wp_addon_cf7/widget') ?>
<?php $formBlock->setFormId(4) ?>
<?php echo $formBlock->toHtml() ?>
did anyone succeed us?