Dungeon Lords Steam Edition (Dungeon Lords)

How to run Dungeon Lords Steam Edition in windowed mode? I suspect that that is what prevents hack the game in ArtMoney and avoid error-type the memory could not be read.
If someone managed to hack it and izzati mistakes in the game - please write about it.
Especially using a Hex editor - but the program Hex editor neo do not write - I already checked - search hex values in it may not be possible, to add a new items (replacing the old one in the inventory) - it is impossible, even detailed instructions here will not help.