Install order...

1. Install Windows XP first
2. Go to device manager and Install drivers for VAIO UX Series
   You can see many question marks.
   -> PCI Bus needs AUDIO driver
   -> SM BUS needs CHIPSET driver
   -> USB needs CAMERA, BLUETOOTH, FINGERPRINT drivers
   -> SONYIMGF driver needs manual install (SONYIMGF.ini file right click -> install)
   -> Install other VIDEO, NETWORK, WIRELESSLAN and etc. drivers
3. Install APPLICATIONS
4. Install UTILITY

All of drivers, applications and utility finished then go to control panel
and run VAIO Control Center->List tab->Button/Keyboard Settings
click Restore Defaults and then you can use special key functions.