<?php echo $this->getLayout()->getBlock("breadcrumbs")->toHtml()?>

<?php
    echo $this->getLayout()->getBlock("breadcrumbs")->
              ->addCrumb('CrumbName', array('label' => 'this will appear as link text', 'title' => 'title attribute of link', 'link' => 'url to the page)
              ->toHtml()
?>

<reference name="root">
    <action method="setTemplate"><template>page/1column.phtml</template></action>
    <action method="unsetChild"><alias>breadcrumbs</alias></action>
    <block type="page/html_breadcrumbs" name="breadcrumbs" as="breadcrumbs">
      <action method="addCrumb"><crumbName>Name</crumbName><crumbInfo><label>Test</label><title>Test</title><link>/test.html</link></crumbInfo></action>
    </block>
</reference>