hi, I've just bought the billing module, and have tried installing it, which according to the instructions, should be really easy. i've uploaded the zip file, unzipped it, cd'd into the billing folder, and run php install.php as root, which returned: Warning: Using a password on the command line interface can be insecure. ISPConfig Billing module has been installed. i've logged into the control panel, gone to system, cp-user, and selected admin, but there's no billing module listed there for me to enable. this server is the main server in a multi-server install, built basically just to hold the full dbispconfig database, it has no apache2 server, so doesn't run the ispconfig interface, I have several other servers running the interface, connecting to the db on this main server. I'd assume that normally the billing module is installed only on the main server, so I'm wondering, in this case do I also have to install it on the servers running the ispconfig interface? or do I need to add billing into the available modules list in the config.inc.php file? if so, shouldn't this have been done by the install script? thanks lee.