Try installing kdebase.

http://www.ubuntu.com/support/faqParticularly relevant for newer systems: nVidia and ATI graphics cards For the latest on these popular cards click here for nVidia or here for ATI. How come I can’t use more than 900 MB of RAM? I have more than 900 megabytes of RAM, but the system only sees the first 900. Why is that?…

Teraserver concept:http://www.linux.ie/articles/teraserver/software.php Ubuntu Samba Server set-up:http://www.howtoforge.com/samba_setup_ubuntu_5.10