dear sir.
it came out,an old remake game,(gabriel knight:sins of the fathers 20th anniversiry edition),they changed alot
they added alot new puzzles etc..,but gog.com,has it also,and i would like to know,if it will work on my
computer,because i still have,(win xp),and now GOG says
it works on,(win 7,8),STEAM says it works on xp
can you please tell me,what should i do ?
i thank in advance
samuel schwartz

XP or later is fine

It's the same game.
It should work on XP as long as your computer hardware meets the requirements.
Make sure your video card meets the requirements.
GOG and Steam both list an ATI or Nvidia card with at least 512 MB of video memory (preferably 1GB or more video memory).