i haven't been able to root any roses yet, but here are a couple sites for reference.
rooting roses using softwood
rose propagation

thank you so much!! :'))

If it's a climber, just leave the branch attached to the mother plant and SOIL-LAYER it. Do a google.com search for instructions on soil-layering.

When it's rooted (by the end of the summer), sever it from the mother plant and pot it up. Keep it sheltered from cold for the first winter.

Jump over to the Rose propagation forum for some info on this subject, too. I've been lurking and finding out a lot of good info.
Linda

Here is a link that might be useful: Rose propagation forum