1. Log in to the Control Panel for your Server
2. Click on the Domains Icon
3. Click on the Domain in your Domains List
4. Click on the Virtual Directories Icon
5. Click 'Add New'

Example: If we had a directory in our main wwwroot called Folder1 and wanted to make it an application root, we would only have to fill in 2 boxes.

Virtual Directory Name: Folder1
Physical Folder: \Folder1

Click Save and Folder1 will now be an application root.

Path To Virtual Directory
Enter the full path that you want to have in the URL before the virtual directory name. Leave blank if the virtual directory is to be created in the root of the website e.g. http://mydomain.com/virtualdir. If you want to have the virtual directory at http://mydomain.com/apps/net/virtualdir, then enter '\apps\net' into the text box.
 
Virtual Directory Name
This is the name of the virtual directory itself
 
Virtual Directory Type
Select whether you want to have the virtual directory point to a physical folder within your web space or whether you wish to point it to a URL of another website.
 
Allow Directory Browsing
Enable directory browsing if you wish visitors to the virtual directory to see the contents of the physical folder if there are no default documents to display.
 
Redirect to Exact URL
Enable redirect to exact URL where you want any file or folder paths visited within the virtual directory to be ignored and for the visitor to be sent directly to the URL only. If you disable this if a client goes to http://mydomain.com/virtualdir/abc/page.html, then they will be redirected to http://redirectedURL.com/abc/page.html automatically.