want ATA help

I've been working with hard drive diagnostic
developement under DOS/Windows environment Using VC
and VB .I want to use ATA commands to get seial
no,attributes, drive vendor, firmware version,
cycliner, head, sector, read,write, seek sector off
the hard drive. I really like to know to use
those function and can access hard drive directory
like the kernel ata
driver. 

Thanks in advance
adel



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