Sorry for the AF, I'm running windows 8 and my webcam software barely works

Uh, I think you'd have to use mono for sure. Make the ground the tip because otherwise you'll short it (I think?) either way yes this would be a simple mod. do you own a multi meter?

Using stereo would be a waste anyway and I don't own a multimeter. I've found the two points to solder to, but I'm not sure of the polarity since I was using an ac adapter I got with an old headset.

unrelated to your question, i have an older guitar pedal that uses a 1/4" jack for power.

Not too unrelated, that's proof that it works!

On the same note, I think older iPod Shuffles used a 1/8" cable for data transfer (from my memory. I might be wrong).
Either way, it sounds like it'd work, in logic.

Possible, yes. Why not use the same points from the old jack for installing the new one?

Good idea....  don't know. 1/4 jacks are easier to pull out, on purpose or accidentally.

There are 6 and I don't know what's what :x

1/4 or 1/8", still better than the regular dc plug. I'd like to try to conserve space though and not use anything unnecessarily large.

Good idea....  don't know. 1/4 jacks are easier to pull out, on purpose or accidentally.