NdisRequest !!!!!!!!!!

my driver fail at this NDISfunction,
NdisRequest(&status,open->AdapterHandle,&pRequest->Request);

oh,i porting from 2000 to WINMe , the sample is NTDDK\'s packet.

and the fail message is

Trap 14 (0EH) - Page Fault 0000, Not Present, Read Access, Supervisor
 <Rterm\'s debugger>
eax=0000f002 ebx=c2920074 ecx=00000000 edx=00000000 esi=c1512080 edi=c15395b0
eip=c001ff87 esp=cdb13e50 ebp=cd9b1f70 iopl=0 -- -- -- nv up EI NG nz na PE nc
cs=0028 ss=0030 ds=0030 es=0030 fs=0078 gs=0030 cr2=81706164      efl=00000286

i am a beginner, so help me!! thank a lot