I've followed all of the advice I can find on how to activate desktop effects to no avail

. My graphics card is an Nvidia GeForce 6100 and desktop effects work fine on PCLOS KDE, Ubuntu, Mint, Fedora, Kubuntu and others. I have installed Drak3d. When I try to configure the video card I am told that there is a proprietary driver available, do I wish to use it? I click on 'Yes' and follow through the remaining steps in the procedure. On reboot, nothing has changed. I've also noticed that if I make any changes to the settings of the video card, these are not saved when I reboot. PCLOS is a brilliant OS and I would like to have it working, eye candy and all!