Thanks for your advice everybody, I can't wait to get started later today.
Just one more thing; when I start SH3, what should be the intro movie is pink and green horizontal lines
Solved the problem when I remembered reading on here just to remove the intro file from the hard drive.
But I'd like to know if this is a common problem and if it affects any other movies in the game, or just 'as it says on the tin', the intro?