sorry Ade - there is another program named z-e-u-s. A few in their affiliate program have been promoting in the forums for so long that I just added it to the filter instead of trying to decide what's a url drop and what's not.
If you are able to mess around with the config files you can get a reasonable amount of info. It can pull keywords and also Search Engine Referrals - but not keywords by search engine. AWStats seems to do that better.
Most hosts with Webalizer seem to just do the 'out of the box' installation.
I will stickymail you with URL example of one of our tweaked reports.