Connecting Landline to Mac 2 record with WireTapPro

[palmharbor]

I have a mac mini and have the application called "Wire Tap Pro" which will record any audio going through the mac. I would like to connect the land line phone next to the mac to the mac so I can record important conversations on the mac using "Wire Tap Pro". Does anyone know specifically what device I need to buy to make this connection?
thanks

 

[JeromeOD]

you will save yourself a hell of a lot of bother by using Skype for your conversations. A telephone balancer unit is costly and doesn't produce results as good as recording a skype feed. WireTap can record the skype audio.