1. No, they're not supposed to fight against monsters.
2. The hostname can be changed by modifying listenserver.cfg (or server.cfg if it's a dedicated server)
3. You have to copy your pvk installation over to the dedicated server directory to be able to run a dedicated server.
Also, this GrogBot forum is somewhat quiet, with only me and AzShadow visiting regularly. The pvkii forums are a better place for discussing about pvk in general.
http://www.pvkii.com/forums