All of the order number information, billing address and shipping address is stored in session variables.
Take a look on the Checkout success page, at where the order number is displayed, this will tell you the session variable name to use in the receipt.
in the bindings panel, expand the session collection and you should find a binding for the order number session, and a bunch of others whose names begin with eCart_checkoutForm_, those are the sessions that contain the billing and shipping information.
On the confirm page, add the Universal Email create email behavior. for the to address, click the lightning bolt icon and select the eCart checkout form email session variable.
for the body, click the DW Edit icon to design the email message using Dreamweaver.
To show the cart contents, add a cart display manager, select the email friendly display type.
to show the billing and shipping address, use the ecart checkout form session bindings.