Have you discussed Seagate FDE with your IT guys? Clearly it is superior to BitLocker. For one thing, the encrytion is hardware-based and there is no loss of CPU speed from the encrypting, like there will be with software-based encrytion like BitLocker.
Hope your guys are not dismissing third party FDE as unneccsary when Bitlocker will be available as part of the Vista OS. If so they are wrong...once again!
Hardware-based trust on drives is going to be a big step forward from software-based security.