ReadProcessMemory()

Sure, take a look at my post here (last entry), it shows my code for a program that uses that function to track variables in another user made program. Take a look at it and see if you can get what you need, if not, feel free to ask for clarifications! The basic gist of it though is this:

1. Get the Process ID (PID) of the program you want to read memory from.

EX: (Program to read from)
ProcessID = GetCurrentProcessId();

2. Get the process handle of the program you want to read memory by calling OpenProcess.

EX: (Program to read to)
HWND clientHandle = OpenProcess( PROCESS_ALL_ACCESS, FALSE, ProcessID );

3. Read in a block of memory based on size

EX:
// Stores the address we want to read from, must be known from client program ahead of time!
int address = (0x040000);
// Need this to store bytes read
DWORD bytesRead = 0;
// Since I was reading in an integer
int buffer = -1;
ReadProcessMemory( clientHandle, (int*)(address), &buffer, sizeof(int), &bytesRead );

That's aboit it really.

Wow, thanks for the fast reply. I didn't know it was that easy. My problem was I was using a HWND instead of the HANDLE :/. Thanks again for the help.