First, if you just want a record of your sales, bear in mind you can always review all your past order data using your E-junkie Seller Admin > View/Download Transaction Log.
If you also want the order data sent to a script at your end where you could save it to a database and perform additional processing, our Integration feature sends a PayPal-style IPN to any script URL you specify:
http://www.e-junkie.com/ej/help.integration.htm
Any ready-made off-the-shelf script that can receive PayPal IPN should also be able to work with our Integration, as long as it doesn't need to validate the IPNs with PayPal (which would fail, since we are not PayPal) and can handle or ignore the extra fields we add to the standard IPN dataset for data we can store that PayPal doesn't.