Originally Posted by
bonechiller
As long as you're replacing it with an identical hub, or a hub with the holes in the flange at an identical height, then there's really no problem reusing spokes, assuming that they aren't visually damaged.
http://yarchive.net/bike/spoke_reuse.html
I believe Brandt is talking about a wheel that simply has the rim replaced; spokes stay on the hub in the same position as already stressed. Basically you loosen the spokes, tape the new rim next to the old and transfer spokes to the new rim in the same positions.
I guarantee if you respoke a wheel with completely removed spokes going into new positions with new stresses you'll suffer many breaking...