Filter driver question

Hi

Can Vista use filter driver , any framework change ?

Does MSDN Library tell us much about filter driver ?

I have question about ComPort Inf section of msports.inf

[ComPort.NT.HW]
AddReg=ComPort.NT.HW.AddReg

[ComPort.NT.HW.AddReg]
HKR,,"UpperFilters",0x00010000,"serenum"


What does Inf HW section use for, and where will it create registry key ?

Thank you .




.

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