BillQuick was developed to use another part of the QuickBooks SDK: QuickBooks Foundation Classes or QBFC. Its installer executable comes packaged with QBFC5_0Installer.exe, which is found in the BillQuick installation directory (C:\Program Files (x86)\BillQuick20XX). This executable ensures that all the necessary components needed to integrate with QuickBooks desktop get properly installed and registered on the Windows machine. As of now, BQE Software only uses this part of the QuickBooks SDK to integrate BillQuick with QuickBooks desktop.
Please find attached a list of all files, executables, services and Windows firewall exceptions that QBFC 5.0 installs.