Which means that you’re quite possibly trying to run an illegal copy of the game from a peer to peer (p2p) network and just, um, forgot to mention that when you sent in your question. The key point, however, is that this file appears to be related to how the game checks to see if the master DVDROM/CDROM is inserted in the drive.
I did what you probably should have done first: I used Google to search for this specific DLL to see what came up and as far as I can tell, it’s a library file used by a game called “Silent Hill 2” and, possibly, other games.