Disable Desktop Effects from terminal

[redhatdude@xxxxxxxxxxxxx]

Hi,
I run my FC6 on a headless computer and connect to it via vnc. After  
upgrading it's ram and connecting to it, something changed and the  
windows had no bars to move them around. I realized that Desktop  
Effects were enable and I couldn't disable it.
I tried gconftool-2 -s '/apps/metacity/general/compositing_manager' -- 
type bool false and it didn't work. I had to get a monitor and a  
keyboard to do it in front of the computer with its mouse.
For the next time this happens to me, what else can I do to prevent  
having to get a monitor?
Thanks,
EJ