I have tried writing a how-to to cover getting awstats to show the compression ratios of various files. You can find it at:
http://www.faithful.dk/article.php?story=20030911210003510As always, suggestions/corrections are very welcome.
Note: There are some hideously long lines there. Any suggestions about breaking them up without preventing people from copying them straight into their own files?
Cheers,
Jens