awstats with mass virtual hosting

[Cristi Banciu <mufa@alibiduba.bounceme.net>]

Hi,
I have a  machine with a lot of virtual hosts. For that I am using 
apache with mass virtual hosting. Now I have to run awstats on each 
single virtual host. I was curious what is the beste metod to do that ? 
As far as I read I have to have one conf for each virtual host. I was 
curios how is it better for awstats ? To have one big log file, each 
line containing the virtual host, or to have one log file for each 
virtual host ? 

Any suggestions, idea, etc. how to do that will be apreciate. I must say 
I never used awstats before.
Thank you very much.