If you go on to www.scan.co.uk we do have a multiregion hack for the KISS 500 which does not involve removing the drive etc etc.Download the firmware and load it on to a cd and pop it into the player.The firmware is unnoficial and scan will not be responsible if it kills the player.This can only happen if the player is switched off while updating the firmware.There
is a hack available for the 450 as well but it depends on the revision of the drive.
nilesh