There is a major problem with Firefoxportable.ini
While running server2go its recommended to keep "RunLocally=false" and
not "true" as recommended on your site.
"RunLocally=true" works as long as you are connected on lan or
internet etc. But the moment you disable your network connections and
try to run server2go with ""RunLocally=true" settings in
firefoxportable it asks you to uncheck "work offline" in file menu and
does not display any page.
So I changed it to "RunLocally=false" in firefoxportable.ini file and
now it works perfectly even if your network connections are disabled.