Hi 
Calamity...
I have cleaned up all with ATI REMOVED and restart, I have installed the driver and restart.
Nothing new (dont switch 15 khz).
I did run VWMAKER after change the path of MAME and the path of MAME.ini from vwmaker .ini
At the start the vwmaker send me a message: NO COMPATIBLE VIDEO DRIVER FOUND
but it continues with installation:   extracting mame.xml...
                                                    Importing video mode from mame.xml
                                                    530 different video modes found
Generating dynamic mode table...  410 redundant video modes
Reducing mode list...   0 video mode dropped
120 modelines generate
Finished. Press any key
When the program end i tried open ARCADEOSD but i dont found the modelines at 15 khz.
I'm gone crazy  
  
 
Remember: My HD4650 is AGP and not PCIe. Do yuo want that i send it???? 
Thanks a lot