FormsCentral allows you to import an existing fillable PDF form and use the FormsCentral service to collect and analyze the submitted data. You do not have to recreate your existing PDF forms within the service in order to take advantage of FormsCentral’s data collection/analysis capabilities. You can read more about it here.
At this time, the service does not support importing an existing Word or Excel document to create a form. You would need to recreate the form within FormsCentral by customizing one of our templates or starting from scratch using the drag-and-drop editor included with FormsCentral.