Customize "Silent Post" Script to submit to SalesForce

Need to customize a php script in order to "silent post" to our [login to view URL] account the information captured and generated by RSForm!Pro ( our Joomla component used for form management) There are already some developed plug-ins or scripts, but they only handle some predefined placeholders and we need some personalization in order to include the other form fields. [login to view URL] [login to view URL] [login to view URL] [login to view URL] [login to view URL]