VISTA 64-bit on VAIO - Drivers and Utilities

[stamby]

Hello boys. Sorry for my not good english (I'm italian)

I installed 64-bit VISTA VAIO FZ31S on, but not all drivers and utilities provided by Sony are compatible with this version.

I know that Sony does not provide technical support for non pre-installed, but should provide But at least the drivers and utilities certificates for use with its VISTA notebook.
This is a limitation not understood.

VISTA, unlike past operating systems, can be used indiscriminately to 32-bit or 64-bit and drivers in general and all the programs that are certified by Microsoft for the operating system MUST be provided in two versions.

Why Sony does not provide drivers and utilities certified by Microsoft for Windows VISTA? It should be done properly.