TurboPrint & PrintFab

I have a problem when trying to initially configure Turboprint.

I followed the instructions posted 'Installation on (K)Ubuntu':
sudo xtpsetup
xtpconfig gets GTK-WARNING Cannot open Display

The computer is a Pent 3 166 MHZ
Ubuntu 6.06 intel version

Ubuntu does not let me log in as root.
I use sudo for root commands
Trying Xhost + gets Unable to opendisplay ""

I hope you can help me.

Thanks

Sorry no ones answered you!

Ubuntu - Setting up root access:

sudo passwd

then enter new password. Thats it, root should now be working like normal. You should now be able to become root then do xhost + etc..
Though, you really shouldn't have to to.

sudo xtpsetup

Should work as far as I know. Without the xhost part. My question is does sudo synaptic work? If it does, then it is a question for Turbo Print to look at. If it does not, then its a question for the Ubuntu community to answer.