forgotz writes:  

Visit http://dadanuke.org for download (club membership required). DaDaBooks Accounting System for PHP-Nuke, is your premier tool for managing your site's PayPal finances! Comes complete with a Register to manage your transactions. An invoicing system, for back-end billing and client-side account/billing status. Comes preloaded with invoice template, that you may modify to your company or organization's identity or create a completely new invoice (as many as you wish). Download all recent transactions from your PayPal account to your Register. You may also manually edit or add transactions as well.Version 2.6 has addressed invoice paid not updating to database. A new page confirming invoice(s) sent. Several other bug fixes and enhancements as well as a complete rewrite of PayPal IPN script.