WHEN to train for flexibility

Just wondering, during your regular workout routine, when do you get the best results for flexibility training? Before the heavy lifting (strength training), or after it? I know it should always be done when one is warm, and I know that general stretching should be done after the workout to keep your muscles from getting tight, but... After hearing Veena say around here that there IS a difference, I started wondering! Unfortunately right now, I cannot afford the Veena lessons, as much as I would like to (especially the strength and stretching ones!), and google isn't playing nice.