Just my 2 pennies worth in amongst so much good advice. I had terrible calf problems around 15 years ago and frustrating as it was a decent rest that helped most. I now find it very productive to do other exercises that have less of an impact on my calfs such as road cycling or using an elliptical trainer. I think this has helped develop my quads and glutes, which in their turn take some of the stress out of my calfs when I'm running. It's already been said but you've got to lose the heels!