Check out Game Play/Design, I’ve just posted a new topic… I could do with your input and testing of the new version…
To answer your questions tho:
a) Graphics are coming from RPG Maker 2000 sites, I’ve listed the resources I’m using in a thread over in Game Play/Design
b) Scripting, yep… was going to plump for some XML based event->response thing for ingame stuff. The scripting for the character conversations is a second dialect… or will be 
c) Client<->Server is currently planned to be an order based system although I’m starting to wonder about the viability of this given the response in the other thread…
Kev