Try this:
Run HFS2.0a with default template on port 80.
Firewall, if present, should not block HFS or port 80.
Browse to
http://127.0.0.1 , if you can not see your HFS, then check wether HFS is switched on.
If you still can'not get localhost redownload HFS and try again
Forward port 80 to the machine HFS is running on. Do the selftest. Does it say that you have acces to the internet? Yes, then check with
htttp://translate.google.com/translate?u=http%3A%2F%2FYOUR_SITE_OR_IP_HERElangpair=en%7Cen&hl=en&ie=UTF8
If you see your site, you are fine, if not
check your ip address something like 192. ... or 10. ... this is your LAN IP. Find your external IP and try again. Still dont get your site by googleproxy? Maybe you are behind a firewall/proxy, you can not be reached from the internet, sorry. (Or ask the proxy/firewall admin to forward to your machine)
Do you have another server running? Strange thing is that you get "Server error" and your friend "Under construction" with the same request.
What is the exact response from the HFS selftest?