I had a liver transplant, how can I remove stretchmarks on my back and stomach?

I had a liver transplant in 2005, and the resulting ascites gave me many stretchmarks on my back and stomach. Now that I will have a bit more money and some better health insurance pretty soon, I am willing to pay a bit to have a procedure done to reduce or remove them. What is the best procedure, or what is the best OTC product that I should use to reduce these stretchmarks as much as possible?

Age: 33
Medications: Prograf, Prednisone, Cellcept, Zoloft, Trazodone
General Information: Liver transplant in 2005
Ulcerative Colitis