Having purchased this game for a couple of different systems, I was finally able to complete it on my PC.
I had tried it on PC in the past as well as on PS2, but due to time pressures with school etc, I found it not engaging enough at first.
I purchased it most recently here at GOG when it was on sale, and just completed it. My initial impressions are that it was much more adventure game than what I had anticipated, which was not a problem.
Combat is very limited both in number of engagements as well as in attacks and is mostly a click fest, but it serves to move the story forward.
At times you can feel somewhat lost with where to go next, until you get used to the interface which really does have the information on it, just not in a super easy to recognize way at first.
It ran very well after some debugging with the assistance of the forums on a Windows 7 X64, AMD Phenom X4, NVidia GTS8800 system.
Hope that others will look to enjoy this adventure-action game.