Unfortunately, you don't explain what the problem is.. Which recorder are you using? Generally, using the microphone and stereo mix (the sound coming from your speakers) can be tricky, IF it works at all.. Feedback and such can be a bear.
Are Stereo mix and the microphone both displayed in the Volume Control Levels? Are both "un-muted"?
Hope this helps and let us know more.
i need help on how to use the stereo mix and MIC at the same time in Windows XP.. thanks in advance and Happy New yEAR