Differences between W2K and WXP

Hi all,

I have a Filter Driver with DeviceObjects that need be attached to Atapi DeviceObjects. I’m wirite my DriverEntry routine with AddDevice pointing to my AddDeviceRoutine.

In W2K, after boot my DeviceObjects are attached to atapi DeviceObjects and PartMgr DeviceObjects are attached to my DeviceObjects.

In WXP, PartMgr DeviceObjects are attached to Atapi DeviceObjects and my DeviceObjects are attached to the PartMgr Device.

I need that my DeviceObjects do attach to Atapi DeviceObjects. I’m changing registry entries to change this situation on WXP, but I haven’t success.
Somebody know if is it possible on WXP ? How can I do it ?

Thanks in advance,

Heldai