Changing default ports for audio/microphone

Hi
I've got a slight problem.

In the front panel i've got 2 ports, 1 for audio and 1 for microphone. However, only the audio port is working (detecting that i've put in the plug for headphones, for i.e), but it cannot detect my microphone (the microphone plug is of course already plugged in).

Then in the back panel i've got 2 more ports, 1 for audio and 1 for microphone. But the back panel is reversed, as i can only seem to detect my microphone there, but not the audio.

So i'm left chosing between microphone or audio.

What might be the problem?
And how may i fix it?

Check the audio configuration in the Control Panel/Hardware and Sound/Sound panel. On the Playback panel, your "Speakers" should be set as the default Playback device. On the Recording Tab, depending on your sound card, you may have two microphones, one for the front and one for the rear. You may also have "System Mixer" as an option too. Selecting the System Mixer (SoundBlaster calls it "what you hear") may also work.

If this doesn't fix the problems, it could be the drivers (and you need Win7 or at a minimum for some devices Vista drivers) need reinstalling or simply uninstalling your sound in the Device Manager and then restarting the PC will take care of it.

To recycle the sound device, Hold the Windows key down and press the Pause/Break Key. In the panel that comes up, the Device Manager can be accessed from the list in the upper left of the panel. In the Device Manger, RIGHT click on the entry for your sound device (to highlight it) and then LEFT click on "uninstall" (DO NOT uninstall the driver). Restart the PC and when Windows starts it should detect and reinstall the sound.

I just found that there are "two" microphones, one for front and one for rear panel. However i am unable to set the front panel microphone as default, as it "isn't plugged in".