Since your post involves technical problems, I've moved you over to Glitches.
If you got Dark Parables and Dream Hills from Big Fish, then any updates would be incorporated into the download already were you to download them now. If you did get these games from Big Fish, I would suggest writing to Customer Support.
If you didn't get them from Big Fish, I would try seeing how they play on your Windows 8 computer - if they are still giving you problems, maybe someone here can suggest a few things to try.