Win64 code compiles different on 32-bit and 64-bit windows.

Might someone of nVidia answer to THREE of my questions!!!
There are three questions since more than a few weeks and there is no answer!!! :thumbsdown:

Hello,

I’m compiling my CUDA .cu file on two machines with -m64 command line parameter on nvcc and create a cubin file.
One machine has a Windows XP 32-bit and the other has a Windows XP 64-bit system installed.

What I have seen so far, is that the code is different for the different machines, although I have installed a 64-bit Visual Studio 2008 on both machines.

What could be the problem?

Thanks
Martin