orcboyx 0 Newbie Poster

In my case I'm try to host some Warcraft 3 games for my friends but to no avail.... I was wondering is there any way to bypass all the extra security from vista? I came across this site which mentions editing host files but I don't really have a clear idea how exactly that will allow me to host if at all.... and I've already tried opening ports and turning off my firewall etc...