A couple of ways...
1. When you go to distribute your form, click the Embed Form tab and then click the "Copy Embed Code" button. Paste this into an e-mail and send it to your webmaster, asking her/him to set up a web page for your form to be served from your web site - thus having your branding.
2. The other option is to distribute as a PDF containing a "Submit" button, which would push data to your response table.