hm, haven`t installed SH3 for ages, do a search for the GWX mod, IIRC they had a great tutorial about the patching sequence.
GWX 3 is a very good mod btw. makes the game it should have been out of SH3.
As for the screen going black after the intro is IIRC caused by a missing or old video codec. Unfortunatly I don`t remember which package it was.
Maybe a search on subsim.com will help.