Web Form Builder Lite only allows you to publish your form to S-Drive. Exporting your form to your own server is only available with the registered version of the software.
This test form here will allow you to try out an exported form that the registered version would generate. This is a fully functioning form allowing you to integrate it into your website and test how the email results work. The only options not enabled in this test form are CSV logging and MySQL as the setup for that is handled through the software and would be unique to each persons hosting account. However, if the email portion works, those features should work equally as well.
Make sure that your server meets the Minimum Requirements before starting the testing process.