disabling MIT-SHM on older Xorg-X11 servers

[john tillman]

Hello,

I'm running Xorg's X11 version 6.7.0-2, at least according to rpm, on
Fedora Core 2 linux boxes.  Old, I know, but that's what I'm stuck with. 
Upgrades are not possible.

I'd like to disable the MIT-SHM extension.  Can someone please tell me how
to do it with the version of X I am using?

I tried adding
    Section "Extensions"
        Option "MIT-SHM" "disable"
    EndSection
to my xorg.conf but X didn't like that and through an error at start up.

Any ideas?

Regards,
John