Good morning everybody. Problem solved!!
The tweak works perfectly on my desktop at the office and any other pc running Windows 7 that I could try it on.
It still did not work on my ASUS LapTop due to the Asus Security chip tha was'nt activated correctly. Done tah everything is fine.
So the solution is:
1. open regedit with administartive priviledges.
2. take ownership and full control of the key
3. modify the key.
Thank you evrybody for your help and patience