I have Linkpoint as a payment module...I use the Approval code to link ZenCart orders to the merchant account when reconciling cc transactions and entering into QuickBooks (it's the only number that shows up everywhere).

So how would I get the Linkpoint Approval Code to show up on the invoice that I'm going to print? I'm sure it's just a matter of adding a snipet of code somewhere, but I'm pretty PHP illiterate.

Thanks!
Michelle