It's simple to get hosted; it's a rather basic script... You would likely take over hosting at it's current place, or choose to move elsewhere; if you chose to move you'd likely end up hiring someone to move it for you.
We have a FAQ forum here, as well as numerous threads in the "how do I" forum, I'd start there.
It's really quite simple, most of the items you'd be doing is moving and editing content users post; all of which can really be found on the "manage" options while viewing a post.
It's easy to upgrade; several of the members here (such as myself) and groupee offer upgrade, support, and modification services.
I'd highly advise upgrading, as there are security issues with 6.4.4
I don't believe anyone has any such documentation on cd or dvd... I haven't heard much want nor need for such a thing..
