Enable Internal/External Microphone Inspiron 1420 on Ubuntu 8.04

I wanted to use VOIP, but the mic didn’t work. How did I enable it?

First, I was able to use the internal mic, thanks to this post.
OK, so now how do I use my own mic.
In the volume control,

1. Click Edit -> Preferences

2. Check the Input Source

3. Change the Digital Input Source to Analog Inputs

4. Select Front Mic as Input Source.

Tested on the Sound Recorder, fixed.