After using Dreamweaver to upload your files to a remote server, the files reside in a folder in the servers local directory tree. For example, on a server running Microsoft IIS, the path to your home page could be as follows:
c:\Inetpub\wwwroot\accounts\users\jsmith\index.htm
This path is known as the physical path to your file.
The URL to open your file, however, does not use the physical path. It uses the name of the server or domain followed by a virtual path, as in the following example:
www.plutoserve.com/jsmith/index.htm
The virtual path, /jsmith/index.htm, stands in for the physical path, c:\Inetpub\wwwroot\accounts\users\jsmith\index.htm.