I've tried the Neutrogena acne scar fading mask... it helped a tiny bit but I don't think I was consistent enough. What are the scars like? There are different treatments for different types.
Heres a list of all the types and different surgical procedures for them: http://acne.org/scars.php
I get the smooth red scars, so I put Mederma on them and it works! Its generally for post-surgery scars (why i got it) but the booklet said it works on acne too so I tried it. It worked better on my acne scars than my biopsy scar. Weird.
As for pocks, those are much harder to deal with.