Thanks for all the input. I fixed the typo on #!, renamed the file name, created cgi-bin dir under the chroot dir (and both have permission mode 755).

Re comment on "curl localhost/..", what I meant was "curl http://ip address/..".

Re slowcgi, according to the manpage, it actually is the implementation of fastcgi. :-)

I suspect there is something on httpd.conf that I am missing, but I copied it from the manpage.

prefork 2 
 
server "default" { 
    listen on egress port 80 
} 
 
types { 
    text/css            css 
    text/html            htm html 
    text/txt            txt 
    image/gif            gif 
    image/jpeg            jpg jpeg 
    image/png            png 
    application/javascript        js 
    application/xml            xml 
}
[download]

All in all, I am still stuck.