Making Remotely Connected ubuntu server as GUI enabled

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http://askubuntu.com – I am trying to connect to a remote server in cloud hosting service using remote desktop client application. Actually, the remote server is a server edition. I need it as GUI enabled like an Ubuntu desktop edition so that it will be user friendly. So I have installed Ubuntu-desktop using sudo apt-get install ubuntu-desktop. I'm able to connect to the server via putty SSH client. In putty we can run in command line mode only. I want to run the server in GUI mode. I can't access the server as GUI enabled in remote desktop client. Mine is Ubuntu 12.04 LTS. The remote server is also Ubuntu 12.04 L (HowTos)