title: Create folder from one site in another's folder
body: <p>There is a folder for file uploads on my site <code>http://mySite/Uploads/</code>
  for each user I want to create  a new folder and save files into it. It works for site visitors/ But i also have an admin site. Employees should be able to upload files with it at the same directory.<br>
  Directory.CreateDirectory returns an error, that it can't handle  uri addresses.
   I'm passing <code>"http://mySite/Uploads/UserId"</code>. am  i wrong? should i use another mechanisms? </p>