OT: VNC resolution question

[James Pifer]

I have vnc-4.0.0.beta4.3.2 installed on FC1. I'm trying to increase the
screen resolution of a session. I have the host machine set at
1280x1024. I'd like the vncserver to also run at this resolution. I've
tried using the -geometry setting in .vnc/xstartup but it keeps starting
up in 1024x768. Such as:
gnome-session -geometry 1280x1024 &

Can anyone assist with how to change the resolution of the vnc session?

Thanks,
James