Custom invoice

Greetings,

In accordance with the laws of Romania, for products, we need to display two curency on invoices (default whmcs currency and local currency)

In a very basic way: $total should be displayed in default currency EUR, and we need another variable something like:
$total * RON. Currency stored in tblcurrencies table

To clarify the situation, we do not want to convert EUR in RON or vice-versa, we need
to show both in invoicepdf.tpl and view invoice.tpl that the attached example (print screen)

/http://img689.imageshack.us/img689/277/a032.png

It is possible to help us with a solution?

Thanks