Firefox not able to run in VNC?

[Kuma Pageworks]

Hey all -

I've got a VNC connection going to my Ubuntu 6.10 machine, and I've
gotten GNOME running.  What I can't get running is Firefox.  When I
check my logs, it says:

You should really not run firefox through sudo WITHOUT the -H option.
Anyway, I'll do as if you did use the -H option.
AUDIT: Fri Feb 23 06:21:18 2007: 12403 Xrealvnc: client 13 rejected
from local host
  Auth name: MIT-MAGIC-COOKIE-1 ID: -1
Xlib: connection to ":1.0" refused by server
Xlib: Invalid MIT-MAGIC-COOKIE-1 key

(firefox-bin:12540): Gtk-WARNING **: cannot open display:

... and I'm confused.  If I don't run vncserver using sudo, I can't
connect at all.  If I use sudo, it seems that I'm getting some
conflicts.

I was also getting dbus errors, but after adding dbus-launch to the
gnome-session line, I've stopped getting those.

Any help?