Removing VESA mode after ubuntu install

To install ubuntu on a machine with a "Intel Corporation 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device (rev 03)" chipset, I had to use the "VESA" install mode. Once installed it wouldn't use any other so I had to remove the 'Driver "vesa"' line from /etc/X11/xorg.conf for ubuntu to use the higher screen resolutions available. I still haven't found out how to make compiz work under ubuntu; it did under RedHat...