Well, I've had artmoney for a long time, but never really figured out what everything means, but I set it to search for All (standard) Exact Value and the only thing I successfully edited was the money. You just do the first search with whatever the money is at just before you minimize the game. Once that's done, go back to the game get a little more money and do a sieve. It should get it down to about 2-4 values. I then add all to the adjacent pane and edit the values. Most of the time, I had to make all of them the same value for the money to be affected. That should do it.
I know, i tried it too, but nothing hapend by me. I tried the game.dat process, and the exe file too, but nothing.
What version of Art Money are you using? And I'm not sure what you mean by the game.dat process. In select process it should just say the Title of the game which is "The Lord of The Rings: Battle for Middle Earth". Nothing else should be selected for scanning. I'm using the free 7.08 version. Actually Sieve doesn't exist in this version it's called "Filter". So, tell me at what point it's not working. Because even if it doesn't find the correct money value, when you do the initial search, it should come up with many results anyway. They'll be Integer 2-4 bytes listed. It's really a simplistic program if you don't know anything about the more complicated searches. If you get no results at all that's nearly impossible, since you could search Program Manager and it'll come up with many integers.
I tried it with other trainer tools like CoSMOS and TSearch. But even in ArtMoney (SE 7.07 free) when I search for my money as integer, it finds about 1000 places, and when the money changes, and i press the Sieve button than it says 0 found.
If it works for you, please post the memory adresses!