We're using the microphone on a gaming headset for our examples, but as long as the computer can see the microphone, you'll be able to use it to EQ the sound.

An equalizer can help you adjust how audio sounds, and counter the shortcomings of your headphones.

I HIGHLY reccomend against the use of the Winamp equalizer. If you want equalization, use one that is hardware based on your sound card. (Don't know if yours does or not, I know the Santa Cruz ...