VMware Tools will allow to have a better control of our appliance by the VMware environment, so it is a pretty good idea to set it up.
First setup our environment by installing the build tools:
sudo aptitude install build-essential linux-headers-$(uname -r)
Next ask VMware to mount the VMwareTools CD by clicking on VM > Install VMware Tools… in the VMware Server menu.
Mount the cdrom:
mount /media/cdrom0
Copy the tools to the tmp directory and uncompress them:
sudo cp -a /media/cdrom0/VMwareTools*.gz /tmp/
cd /tmp/
sudo tar -xzvf VMwareTools*.gz
Run the vmware-install.pl script accepting all the defaults:
cd vmware-tools-distrib/
sudo ./vmware-install.pl
Found on http://help.ubuntu.com/8.04/serverguide/C/jeos-preparing-os.html