Audio record from Windows Vista Mixer

When I used Windows XP it was able with Audacity application, to record from Windows Audio Mixer and, let say, I was able to record a VOIP call from Skype. My sound card is the same Realtek AC’97.

Now I’m using Windows Vista Ultimate Edition with the same sound and Audacity can’t detect the “Stereo Mixer” (the name that was in XP).

Any ideas?