Hello silver925,
To link a document that is on your cpanel to a page in your builder site, you would simply add it as a link. For example, if you upload test.doc into your public_html folder, the URL would be http://www.yourdomainname.com/test.doc
From within the builder, simply create an external link as in the article below:
Adding External Links in the Premium Website Builder
Best Regards,
Scott M