I asked Sony about Windows 64bit and this was their reply (apparently Macs and 64bit are specialist and minority - I call it a lazy response):
Thank you for your recent e-mail received on xx/09/2008
Sony products will not operate with VISTA 64.
The V64 system is specialist and a minority product (like XP64 or Mac) Sony have no current plans at present to make products compatible. To obtain more detail and find out what exactly VISTA 64 is and what it is for, please see the link below:
http://www.microsoft.com/windows/pro...ons/64bit.mspx
I am sorry for any disappointment that this response may cause.
Yours sincerely
Daniel Ayliffe
Customer Information Centre
SONY UNITED KINGDOM LTD