You mention that things are not working when you have them on the live server, what does happen for you when you try to use the page?
You can edit the form of the Contact Solution pack with CSS Form Builder, you would just need to select the form in DW and insert your new CSS Form Builder form. There is more information about updating your existing forms to be CSS Form Builder forms in the Getting Started Guide that can be found in the CSS Form Builder support page, here is a direct link:
form_builder_gsg.pdf