Have you look at
www.outworldz.com/Outworldz_installer/
as it may be more suited to you, since you say you prefer 'plug and play' type solutions. As mentioned, OpenSim on it's own is most definitely not PnP!
Not sure what your aim is, but if you host OpenSim on your own computer then perhaps you could also host the website there? I use dynu.com who offer a great way to use DDNS which may work for you.