There is a install txt if you download the graphic drive from zotac.
The driver works only with 11.10, if you build it with 12.04 or later you get compile errors.

This beta driver is provided for ZOTAC ZBOX VD01.

The drivers installation may require Internet update. Please setup the Internet connection after the Ubuntu installation complete.

Step 5 didnt work, you must delete all “monitor” entrys from xorg conf and add following:

Section “Monitor”
Identifier “HDMI-1″
#Option “Ignore” “true”
Option “Enable” “true”
#Option “AttachAllModes” “true”
#Option “PreferredMode” “1280x720P”
#Option “ClockPolarity” “1″
#Option “ClockAdjust”
#Option “ClockDrivingSelection”
#Option “DataDrivingSelection”
Option “DefaultModes” “true”
EndSection

Here is the manual:

To install Ubuntu:
==================
1. During the installation load, press SHIFT go to the installation menu.
2. Select Language
3. Select Install Ubuntu
4. Press F6, press ESC.
5. You could see a message at the bottom, then type “xforcevesa”.
6. Press to install Ubuntu.
7. After Ubuntu installation complete, copy the follow compressed files to a folder under user home. These files must be decompressed under Ubuntu.

Graphic Driver 5.76.42.90-u1110_32bit-62106.tar.gz
Video Driver 5.76.42.90-u1110_32bit-video-62124.tar.gz
VDPAU Wrapper package VDPAU_Wrapper4.1-u1110_32bit-62126.tar.gz
HDMI Audio Driver via-gfxhdmiaudio-ubuntu1110_1.3.0-0ubuntu1_i386.zip

To install Graphic Driver:
==========================
1. Decompress the Graphic Driver to a folder.
2. Open a terminal and go to the folder with “vinstall”.
3. Run administrator mode by “sudo -s”, password is required.
4. Type “./vinstall” to install (DO NOT RESTART before step 6).
5. After installation complete, edit the etc/X11/xorg.conf.
Enable the options for HDMI-1 and DisplayPort-2.

Section “Monitor”
Identifier “HDMI-1″
Option “Enable” “true”

Section “Monitor”
Identifier “DisplayPort-2″
Option “Enable” “true”

6. Exit and restart Ubuntu.

To install Video Driver:
========================
1. Decompress the Video Driver to a folder.
2. Open a terminal and go to the folder with “vinstall”.
3. Run administrator mode by “sudo -s”, password is required.
4. Type “./vinstall” to install.

To install VDPAU Wrapper package:
=================================
1. Decompress the VDPAU Wrapper package to a folder.
2. Open a terminal and go to the folder with “vinstall”.
3. Run administrator mode by “sudo -s”, password is required.
4. Type “./vinstall” to install.

To install and enable HDMI Audio Driver:
========================================
1. Decompress the HDMI Audio Driver to a folder.
2. Open a terminal and go to the folder with “vinstall”.
3. Run administrator mode by “sudo -s”, password is required.
4. Go to the “deb folder, which included a .dep file.
5. Type “dpkg -i –force-overwrite “.
6. After installation complete, exit and restart Ubuntu.
7. In SYSTEM sound menu,
Select Hardware > Digital Stereo (HDMI) Output >
Select Output > Internal Audio Digital Stereo (HDMI)

REMARK:
Please find the detail procedure from the driver user guide.
Run the Ubuntu update may reload the default graphic driver. You need re-install the VIA graphic driver under command prompt.