Here's my solution to that problem
Many people (myself included) think the SH4 intro movie is a bit out of place, so I've made a replacement one (it's less than 6 MB) and is a bit more inkeeping with the mood for the game than a Milton poem read by a Limey.
You can download it from here:
http://www.mediafire.com/?7z0jwmommqy
Of course you might not like it, so back up your original movie in case you don't like mine. It goes in this folder and replaces the movie named 'Intro':
Program Files\Ubisoft\Silent Hunter 4 Wolves of the Pacific\Data\Movies
