Yes. Yes, you can conceive and give birth. A high risk OB would be needed if the scleroderma was a severe form of the disease.
Yes. Need to see perinatologist for care.
Most women do. Most women with scleroderma have no problem as the vagina and the uterus are not typically affected. The only problem I would see is that if a woman had severe systemic scleroderma with multiple organ involvement such as kidney failure or heart disease, then the question of getting pregnant at all would come into question.
Yes. A natural childbirth should be possible in most patients with scleroderma. This issue needs to be discussed ahead of time with the obstetrician.