VNC - getting a black screen on FC4

[redhatdude at bellsouth.net]

Hi
I set up the vncserver on Fedora Core 4 according to the real vnc web  
page. First problem I'm having is that even though I set up the  
authentication method and the password file pointing to /root/.ssh/ 
passwd I still have to start the server with the password argument  
pointing to this file or I get an error saying I have not created a  
password. I did create it with vncpasswd. The second problem, which  
is the one I need to fix first, is that when I connect to my FC4  
machine using a vnc viewer all I see is a black screen. I don't see  
the login screen, just black and the cursor ( a big X ).
What is going on? Can someone help me fix this?
Thanks
EJ