Checksum Offloading in NDIS5.0

Hi,

If anyone has implemented the TCP/IP Checksum offloading in NDIS5.0, please
reply as i am facing a problem.
I handled the OID_TCP_TASK_OFFLOAD oid in the QueryInformation.
NDIS is calling the SetInformation and is setting the correct flags etc.
But somehow the code is crashing in the SendPackets routine.
If anyone who has implemented the same can give me some clues, it will be
very useful.

Regards,
Santhosh