Well, won't do much.
Basically the same as for cookies dll.

(PS: Would be nice with a comment. Ask if you want snippets.)
(Work Progress: ETC = Easy Tool Creator. An easy DLL file that contains useful functions. 70% Done)

Source: (No, I did NOT write this. I just changed some values.)
Code:
public class Hack
    {
        [Flags]
        private enum ProcessAccessType
        {
            PROCESS_TERMINATE = (0x0001),
            PROCESS_CREATE_THREAD = (0x0002),
            PROCESS_SET_SESSIONID = (0x0004),
            PROCESS_VM_OPERATION = (0x0008),
            PROCESS_VM_READ = (0x0010),
            PROCESS_VM_WRITE = (0x0020),
            PROCESS_DUP_HANDLE = (0x0040),
            PROCESS_CREATE_PROCESS = (0x0080),
            PROCESS_SET_QUOTA = (0x0100),
            PROCESS_SET_INFORMATION = (0x0200),
            PROCESS_QUERY_INFORMATION = (0x0400)
        }
        [DllImport("kernel32.dll")]
        private static extern IntPtr OpenProcess(UInt32 dwDesiredAccess, Int32 bInheritHandle, UInt32 dwProcessId);
        [DllImport("kernel32.dll")]
        private static extern Int32 CloseHandle(IntPtr hObject);
        [DllImport("kernel32.dll")]
        private static extern Int32 ReadProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress, [In, Out] byte[] buffer, UInt32 size, out IntPtr lpNumberOfBytesRead);
        [DllImport("kernel32.dll")]
        private static extern Int32 WriteProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress, [In, Out] byte[] buffer, UInt32 size, out IntPtr lpNumberOfBytesWritten);


public Hack(string Application)
{
    Process[] pArray = Process.GetProcessesByName(Application);
    if (pArray.Length == 0){ return;}
    ReadProcess = pArray[0];
    Open();
}
public void Set(int Address, int Value)
{
    int byteswritten;
    Write((IntPtr)Address, BitConverter.GetBytes(Value), out byteswritten);  
}



private Process ReadProcess
{
get
{
return m_ReadProcess;
}
set
{
m_ReadProcess = value;
}
}
private Process m_ReadProcess = null;
private IntPtr m_hProcess = IntPtr.Zero;
private void Open()
{
ProcessAccessType access;
access = ProcessAccessType.PROCESS_VM_READ
| ProcessAccessType.PROCESS_VM_WRITE
| ProcessAccessType.PROCESS_VM_OPERATION;
m_hProcess = OpenProcess((uint)access, 1, (uint)m_ReadProces*****);
}
private void CloseHandle()
{
int iRetValue;
iRetValue = CloseHandle(m_hProcess);
if (iRetValue == 0)
throw new Exception("CloseHandle failed");
}
private void Write(IntPtr MemoryAddress, byte[] bytesToWrite, out int bytesWritten)
{
IntPtr ptrBytesWritten;
WriteProcessMemory(m_hProcess, MemoryAddress, bytesToWrite, (uint)bytesToWrite.Length, out ptrBytesWritten);
bytesWritten = ptrBytesWritten.ToInt32();
}
}

Do it in a DLL project. OR, change it for your purpose. (Need some removing and editing.)
(If you have used Cookies DLL, then you understand how to use this in a WinForm Project.)

Good Luck guys, just ask if anything needed.

Code Lang = C#