I upgraded my Ubuntu 8.04 to Ubuntu 10.04 and when i try to enable desktop effects it says: **Desktop effects could not be enabled**. The output of `lspci | grep VGA` is :

> 
> 00:02.0 VGA compatible controller: Intel Corporation
>  82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device (rev 03)
> 
> 
> 

Hardware drivers says there is no propriority hardware driver. I installed nVidia driver but I think my is an Intel graphics device.
Please help.