I use Ubuntu 8.04 with all the fancy effects on the Pico. You need the driver you downloaded and then you need the kernel patch that should be available from the same place. I think it is in the little box on the right.
I had never patched the kernel before but managed to follow the instructions provided. Be careful though, as the instructions aren't perfectly clear. Read them through a few times, and then read ahead as you work through them. I managed to do it first time. See the thread on the same topic elsewhere here. I'll see if I can find it for you.
EDIT: Here it is.
Ubuntu 8.04 unichrome patch and CX700M2 drivers