Silent Hill 4 freezes

hey
i have read all the posts on previous Silent Hill issues, so please dont tell me togo read them.
I have a Sony Vaio notebook with a RadeonIGP 345M
64MB memory video card which shud be able to run the game, but it isnt. so i have ot run it with 3d-analyzer. i can start the game fine, i see the opening credits saying Konami and the i can go to the menu and start a new game. here is where my problem is happening. once i watch the beggining "then 5 days ago he had a dream. Now he cant leave his appartment", and then the comuter screen turns white and freezes. does anyoner have help with this?
thanks for any help