Many have asked, and I've finally done it. This is a tutorial explaining how I do my linework in Photoshop CS5.
It should easily transfer back down to at the very least CS2, since that is what I was using up until a few months ago. Photoshop is generally the same all around however, so I don't imagine it would be a problem.
And hey! If you use this, link me any pictures or lineart that you draw with help from this tutorial! I'd love to see!