Found such mod: http://www.widescreengamingforum.com/forum/viewtopic.php?t=11566
Everything seems ok expcept the fact that gog version doesn't have specified registry in this mod - any clues?

GOG games get registered under a GOG folder so it will be HKEY_LOCAL_MACHINE\SOFTWARE\GOG.com\GOGSACRIFICE

Not under xp x64, using xp x64 the correct path is HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Shiny Entertainment\Sacrifice
Anyway problem solved by myself.

How did you solve the problem?
in the gog's folder of the regedit there isn't the folder "options"

I've posted the correct registry path on xp x64 in my last post - I think it should be clear where to look for it.

Hey,
Hope anyone can help. I change the Resolution key in registry, however my selected resolution isn't available in the game. Also, after closing Sacrifice, the Resolution key in registry has changed back to how it was before.