How to record voice from modem when calling out using Outlook?

[dataplayer]

When I open Outlook, I am able to pick a phone number and call that number. Then the modem starts dialing the number. In the mean time I pick up a mike or a phone (in paralell with the modem) for the phone conversation. If I want to record the conversation and save it as a sound file, what should I do or how? Thanks for any clue.

Frank