Can't Enable Desktop Effects

[Sam_GR]

Hello.After deleting old driver for my video card I can't enable desktop effects.I don't know what to do.When i run

lspci -nn | grep VGA

I get

00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07)

What I have to do?
I am so desperate.

Thanks in advance.