I thought I'd start my webcasters report with how I recorded my introduction.
HP nx6120 notebook
60 GB HDD/1.25 GB RAM/15" TFT display
I used a reguler ($5) mic, that went into mic port of the laptop.
For recording I used Audacity, and set the sound source to 'Microphone' (The sound source appears on the controls at the top of the window just besides the volume settings).