how can i get caller id in c# program

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C#

hello to every one.

my be some one know how to get the caller id from a home phone
in c# program
I mean when some one call to my home phone i want to get that phone in the program.
what the code i need to write and what devices / Instruments
i need to buy and how i connect between the devices the phone and the modem / computer.
what goes where (Integrates)

very very Sorry that i don't know English . hope you Understand what i asking

Thanks