For those of you whom are having difficulties installing a USB Keboard on Windows Vista 32 or 64 bit Microsoft are now using a fix which should be in the next SP but for now you have to Submit a request to MS for suport for the hotfix on this issue. 
It is not an interface issue but a timing issue in the Usbdev.sys which even if you install a driver for the device it will keep requesting it until you throw the keyboard in the bin or return it for a refund.
I have just been through the mill with 2 Logitech keyboards and a universal USB latop type keyboard. Finally tonight I received the Hotfixes from MS within 2 hours of reporting the issue for both 32 bit Vista and 64 bit. Much better support than I got from Logitech.

It is not an interface issue but a timing issue in the Usbdev.sys which even if you install a driver for the device it will keep requesting it until you throw the keyboard in the bin or return it for a refund.
I have just been through the mill with 2 Logitech keyboards and a universal USB latop type keyboard. Finally tonight I received the Hotfixes from MS within 2 hours of reporting the issue for both 32 bit Vista and 64 bit. Much better support than I got from Logitech.


