VNC

I'm running SLES 9. I'd like to use VNC to access the server remotely, and currently it is working, but there are some issues. I would like it set up so that when I go to access the server via VNC, it asks for a VNC password. Currently, if I type "servername:5901" in the VNC server name box, I am taken directly to a SuSe log in screen. I am never prompted for a password from VNC to get that screen. I have tried using vncpasswd to set a password, but when I launch VNC remotely, it never prompts me for the password I entered. I have rebooted thinking X might need to be restarted. I would also like to set the SuSe login screen to NOT display users on the left of the login box. How can I disable this? Thanks.