How to get caller I.D. to display on computer

It occured to me that since the phone line was plugged into my modem, there was no way to get caller id on my computer. So I plugged an additional line, from the wall, into the computer phone jack, just like in the old days of dial-up, and using the free phone tray program I was then able to get the caller id on the computer screen.

Thanks Bob for responding,

Eddie

You wrote it was connected to a new modem so I was left with the impression it was plugged in. For those that don't know, Caller ID shows up over the phone lines. So if you need that, said phone line has to be connected to the devices that have Caller ID features.
Bob