After running the perl configure.pl , httpd.conf of Apache had been modified, but it's incorrect: In windows version, the path was created as "../wwwroot/classeds", which is incorrect. So I had to modify it into absolute path. Some modifications were needed, e.g.

#
# Directives to allow use of AWStats as a CGI
#
Alias /awstatsclasses "F:/Program Files/AWStats/wwwroot/classes/"
Alias /awstatscss "F:/Program Files/AWStats/wwwroot/css/"
Alias /awstatsicons "F:/Program Files/AWStats/wwwroot/icon/"
ScriptAlias /awstats/ "F:/Program Files/AWStats/wwwroot/cgi-bin/"

#
# This is to permit URL access to scripts/files in AWStats directory.
#
<Directory "F:/Program Files/AWStats/wwwroot">
    Options None
    AllowOverride None
    Order allow,deny
    Allow from all
</Directory>