Yeah, I remember it was quite a bit of work to get it running properly on a 'new' PC (i.e. Windows XP). But there are a few forums out there and I think even a community patch.
The details are wonderful - I remember being amazed at the graphics, thinking how 'ahead of its time it was' when I first played it, but even on a recent play-through I still loved it.
The main guy's voice acting is also brilliant, one of the best voices ever used for a player character. Not even sure why that is - it's just the right amount of creepy.