I'm happy to tell you I solved the problem, or actually found a solution (hack) from google:
THIS SOLUTION IS ONLY FOR ASUS N53SV NOTEBOOK WITH NVIDIA GT540M
1. Download Nvidia driver from MSI (64-bit, ge620_gt540m_8.17.12.6704_w764) from here:
http://eu.msi.com/service/download/nbdriver-16168.html2. Run the downloaded "Win7x64_HDA(267.04).exe" and unpack the installer to a temp folder (i.e. C:\temp) but don't run the installer yet! You have to replace a file.
3. Download this file:
http://www.mediafire.com/?1bvq14d4de2vfmh . It's an edited file NVMI.inf file to run it with ASUS N53SV.
4. With this new file replace the one here "C:\temp\Win7x64_HDA(267.04)\Display.Driver\NVMI.i nf" (if you have unpacked the installer to C:\temp)
5. Now run the driver installer with "C:\temp\Win7x64_HDA(267.04)\setup.exe" and it will recognize your NVidia card in your notebook!
6. Run virtual dj_pro short cut with nvidia graphic card