Teresa, I'm not sure we have one. We're such a foolishly extravagant bunch that we usually buy roses rather than taking the trouble to root cuttings.
Maybe someone else can remember a thread of that nature, but here's the method I use in most cases:
I wait until the rose is producing buds and I then cut off a 6-8 inch lengh of stem. I choose a stem with a bud at the tip because those are full of vitality. I cut off the bud, so that the cutting won't waste energy on making the bud bloom, and I remove the leaves from the bottom three or four growing nodes. I dip the bottom end of the stem in growth hormone and plunge the cutting into the ground, deep enough that those three or four nodes are under the soil. If possible, I grow the cutting in the ground under the mother plant or very close to the mother plant (on the assumption that it must be a good place for this particular cultivar to grow). If that's not possible, I grow the cutting in a 1-gallon container filled with high-grade potting soil. Keep the soil in the container moist, but not soggy, and keep the container in dappled shade at first. You can move it into full sun after it starts producing new growth.