Ubuntu Server 9.10 on Vmware

"If you went through the setup, you can now login there with the user account you created during setup.

Ubuntu server by itself does not include a graphical interface (X Windows et al), as that edition is for servers. If you were looking for Ubuntu desktop (with a GUI) you can grab it here. If you don't wish to download another ISO you can use apt to install X and GNOME (the default that comes with Ubuntu desktop):

sudo apt-get install x-window-system-core xserver-xorg gnome-desktop-environment

you'll need to enable the Universe repository first then run sudo apt-get update."