Installing Vmware tools on a linux box is a straightforward affair from the terminal.
The first step is obviously mount the ISO to install VMware tools. Just a right click on the guest and then guest, install/upgrade VMware tools.
Now the commands needed on the Ubuntu box are as follows. Note all need to be run as root or sudo.
mount /dev/cdrom or /dev/sr0 /mnt/cdrom
tar xzvf /mnt/cdrom/VMwareTools-x.x.x-xxxx.tar.gz -C /tmp/
Bosh. Job done.