Hello Magento experts,
I want the collection of both sales/order_collection and my custom module collection in grid.php of custom module.
Now i have the collection of my custom module
$collection = Mage::getModel('purchaseorder/purchaseorder')->getCollection();
Now i can access the data from custom module table and i need to get the data from sales/order_collection to display in the grid display, How can i do that. Pls help me