An alternative is SKN[3]AC's code using OpenProcessMemory() <Windows only> that's in the code archives. It should be quite easy to write a simple game trainer with this (if that's what you are trying to do). Generally you search for a memory location by matching the value as you say, but you may well get more than one 'hit' so you modify the value in the target program (eg by losing a life) and seeing which of the original hits contains the new value. I'm starting to sound like a parrot now.. this question has come up a bunch of times... but he used the code to make a mod for Pro Evolution Soccer IV to allow people to play over the internet.
Non-local App Memory Manipulation
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