I responded to your other post about this too. But to elaborate on what you can do to have a non-CF child is IVF with PGD if you are a carrier. It's a process where they will biopsy the embryos at a specific stage and test them to see if the embryo is suspected to have CF, be a carrier, or be "normal". If you cannot afford this route (it can be very costly if you don't live in an insurance mandated state like Illinois), you can always use donor sperm where the donor has already been tested for being a CF carrier and do intrauterine inseminations.
If you have any further questions, feel free to ask - I'm an embryologist so I have had the great pleasure of performing these lab techniques.