Paul from our tech support department sent me this note:
LE1600 and LS800 both have a BIOS update that requires you to install it prior to the Vista installation. If you could note it on the website and blogs with this link to Motion's website driver downloads that would help. Only the BIOS is required before the installation. All other drivers can be done after the installation of Vista.
LS800 Vista Drivers: http://www.motioncomputing.com/support/driver_download_800_vista.asp
LE1600 Vista Drivers: http://www.motioncomputing.com/support/driver_download_1600_vista.asp