NX Server and Client X cookie erroor

[knoppix@wpascanner.com]

Any one had any sucess with 4.02, 5.00, or 5.01 CD or DVD, live or HD installed getting the NX 
client or NX server to run? I'd really like to run KDE remotely for my desktops when at 
home/work. 

I get stopped at "Unable to create X authorization cookie" 

I've looked at: 
http://www.knoppix.net/forum/viewtopic.php?t=24952&highlight=xauth 

And others it all seems to be xauth related, but /usr/bin/auth doesn't exist so the info in the above 
post doesn't work. 

Where is this xauth so I can copy it to /usr/X11R6/bin 

Thanks in advance for your positive repsonse.