; ---- k32.def ----
LIBRARY KERNEL32
EXPORTS
        _VxDcall @9

// ---- subst.cpp 
extern "C" int _declspec(dllimport) _VxDcall;

void main()
{
  char szSubstPath[] = "c:\\1";
  
  _asm 
  {
     mov    eax, 71AAh
     mov    ebx, 'M' - 'A'+1
     lea    edx, szSubstPath
     push   ecx
     push   eax
     push   2A0010h   // Int21h_Dispatch
     call   _VxDcall
  }
}