Can I talk on the phone line via my laptop modem?

I have an Acer Extensa 4420-5963. I have backgraded it to XP Pro because a necessary application wouldn’t run under Vista. Once I get the question of why the modem is not being recognized by the “Printers and Other hardware” menu flat, I am wondering if I can plug in say a USB headset and call out/talk on my landphone line via the modem?

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