Okay, first of all, there aren't any trainers or hex editors for Syberia, because Kate has no stats, skills, hit points, or anything else you could
conceivably want to edit. I'm really surprised how many people have been asking me for that.
The only way to really cheat in this game is to look up the
solution to a puzzle rather than figuring it out yourself. If you want to do that, or you just want to learn more about this great game, here are a few good
links for you:
My Syberia Pages:
Syberia Hints, with general gameplay information and suggestions.
Universal Hints System is a great place to get a spoiler for one specific puzzle you're stuck on without accidentally ruining any of the rest of the game--they have
their walkthrough uniquely structured to reveal only one hint at a time.