Using HFS & XP Firewall at the same time
OK here we go~
First, go to Network Connections in whatever ways you want to (one is opening it in Control Panel)
Then see which connection is Firewalled --> a little Padlock icon on the top right
After you have found it, right click it go to Properties
Go to Advanced
Then at the lower right Settings...
If you using Port 80 which is the Web Server (HTTP), just check the tick box of it (be warn that some ISP is blocking port 80, so it might not work on port 80)
If you are not using port 80 you have to Add... it yourself
Description of service: HFS
Name or IP address: "You computer name using by windows"
External/Internal Port number for this server: "Any Port you set your HFS to"
Click OK then it is done
You might have to reboot or restart the connection to take effect of the setting