You must have a baclground pen to override it. If the background pen is
set to transparent the renovation override does nothing - you can also
use this as a feature.
Network drives are not the best solution as they always need to be
mounted and the connection speed is unsuffient. You might try other
Systems than SMB, etc liek Fibre Channel, where the connection speed is
much more higher and the connection type is...
Your Server has to be accessable from the outside, therefor you ´need a
static IP. GS has made a good archicadwiki about it.
http://www.archicadwiki.com/Teamwork