I'm playing this game to (on XP), and in Full Screen mode as well, thanks to a point in the right direction by Magtro (from this thread) and a huge shove by Katie!!!
thanks,ladies. I'm really enjoying this very underated game. I didn't like it at first, but I think an important point to note is that if you read the manual in it's entirety (sp?) and read all the notes, journals, books and listen to the phone messages, video clips and so on ...you get an awful lot of plot exposition. It gave me more of an understanding about the story itsself.
P.S I wouldn't even touch this game without a walkthrough. I found two really good ones: Walkthrough by Eileen Carather
and Walkthrough by "Lady Nightshade"
but her site seems to be underconstruction ...the last time I checked.