Maybe you SZ guys are lucky because SZ,
TZ and some other models seem to have the additional
SPIC device in addition to
SFEP.
Sony provides 64bit drivers for both but e.g. on AR models there's only SFEP – no other unknown device.
All Sony Shared Library installs I tried resulted in failing
DMICall.sys.
On AR the DMICall.sys driver is supposed to provide special keys whereas on SZ apparently the failing DMICall.sys doesn't matter at all.
I just did a simple test with the original Sony OS image to get this confirmed:
Used tool AutoRuns
http://technet.microsoft.com/en-us/s.../bb963902.aspx to disable driver DMICall.sys. Reboot - no special keys working anymore (except volume+mute of course), S-Button won't even show up in VAIO Control Center. Enabled DMICall.sys, after reboot everything working again.
Without a x64 version of DMICall.sys installing any Sony driver or util stuff does not make any sense on my machine. I don't even need volume UI. Also I'm glad there's Windows Mobility Center (Win+X) - not as fast as special keys but at least the system's cleaner, fewer processes...
If anyone has special keys working on AR with Vista64 plz let me know!