Please see the below how to on enabling desktop effects for a Dell D830. There are some great docs out there but most seemed to miss out some good bits that I have found in others. I have attached the links that I found most useful as a reff to the sites that were the most useful. I hope that this is of some help to you guys with nvidia 140M cards.
Setup Compiz on Fedora 10 posably 11
1. Add custom repos
#rpm -Uvh http://download1.rpmfusion.org/free/...ble.noarch.rpm
rpm -Uvh http://livna-dl.reloumirrors.net/fed...9-2.noarch.rpm
Add rpms needed for the 140M 3d card
#yum install kmod-nvidia xorg-x11-drv-nvidia xorg-x11-drv-nvidia-libs
#yum install akmod-nvidia xorg-x11-drv-nvidia-libs.i386 xorg-x11-drv-nvidia-libs.x86_64
Add this to the /etc/x11/xorg.conf
Run the below command to see if the glx drivers have loaded
#glxinfo | grep direct
direct rendering: Yes
Now you should be able to turn on desktop effects. If this also works with Fedora 11 please let me know.