go to start menu, run cmd prompt, then type in ipconfig, check your ip, put it into browser. enter your router password either found on your router or if you've changed it, your password then. After, go to your system on the menu and check the applications on it. Make sure none of the other computers linked to the router have their ports forwarded to host, then allow wc3 and wc3:tft on the pull-down applications menu on the options there. disable your firewalls and set your port on wc3, accessed in the options menu to 6112 if not defaulted to that