Problem with ssh

[White Hat]

I have tried using the following command with negative results.
 
      ssh -L 5902:localhost:5901 scorpio
 
That produces this error message:
 
      Permission denied (publickey).

I found a reference to this command at:
 
http://www.cl.cam.ac.uk/research/dtg/attarchive/vnc/sshvnc.html
 
I cannot figure out how to correct whatever the problem is. I am attempting to connect to a FreeBSD-6.3 machine running 'TightVNC' from a WinXP machine. The connection works fine using a regular connection; however, I would prefer to use 'ssh' and limit the port to localhost for security.
 
Thanks!

-- 
White Hat 
pigskin_referee at yahoo.com


      ____________________________________________________________________________________
Be a better friend, newshound, and 
know-it-all with Yahoo! Mobile.  Try it now.  http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ