Hey guys, I have some kind of a problem here, my graphic card is spoused to run 3D graphics but it doesn't work for some reason I'm running Ubuntu 10.10 and here is my lspci output:

Silicon Integrated Systems [SiS] 661/741/760 PCI/AGP or 662/761Gx PCIE VGA Display Adapter

I know it's old but when I type the command "glxinfo | grep direct"
it gives me the out put YES but when I try to apply any 3D thing it won't work, even the screen saver lag when I go on it, any idea how to solve this?