piklist('field' ,array(
	'type' => 'group'
	,'label' => 'Dates (From - To)'
	,'fields' => array(
		array(
			'type' => 'datepicker'
			,'field' => 'date_from'
			,'label' => 'Date: (from)'
			,'options' => array(
				'dateFormat' => 'M d, yy'
				,'changeYear' => true
			)
			,'attributes' => array(
				'class' => array('date')
				,'size' => 12
			)
			,'columns' => 6
			,'value' => date('M d, Y')
		)
		,array(
			'type' => 'datepicker'
			,'field' => 'date_to'
			,'label' => 'Date: (to)'
			,'options' => array(
				'dateFormat' => 'M d, yy'
				,'changeYear' => true
			)
			,'attributes' => array(
				'class' => array('date')
				,'size' => 12
			)
			,'columns' => 6
			,'value' => date('M d, Y')
		)
	)
));

Would be my best guess of how to do it quickly.

Marcus