fralolo, did you have to change the log format to get awstats working, or does the current log format work? Did you install all the awstats files in each client's cgi-bin, or did you find a way to do a central setup?
I'm probably going to set ths up for my clients as I had awstats on my windows machine before I switched to plesk, and webalizer just isn't as good. I don't know why sw-soft used webalizer, its easier to setup awstats on windows and its better.