I was reading some stuff at TheJetsBlog and in a post by Bent I found this link. Apparently adamjt13 has been predicting, very accurately, the compensation picks for each team for about a decade.
From what he is saying the Steelers will likely receive two 5th round and one 7th round pick though the Nate Washington comp may end up a 6th instead of a 5th round. Three extra draft choices is nothing to sneeze at.
Hopefully I am not covering something someone else have covered here.