i used this command
and it worked for me
the error occurs because of the absence of the virtual directory of the website.
when u develop a website it automatically genrate its directory in ISS , when u carry a website from another system in removable memory device, it creates the same problem as u have mentioned.
to overcome the problem u have to create a virtual directry in The IIS for which follow the path..
START>>Control Panel>>Administrative Tools>>IIS>>New Virtual Directory(right click on Web Root) .
it will work for you.