If you offer to pay the remaining amount on a "less than full" CC account, you do have some leverage and can possibly get a PFD.
As for the judgment, if it was dismissed, actually dismissed, not just marked "satisfied" then you should be able to file "Vacate Judgment" paperwork at the Court Clerk's office and it'll get the judgment removed. Just what language has to be used in the "Vacate Judgment" courthouse form, I'm not sure but it needs to be specific to the situation. I've never seen any posting of what that language should consist off, which leads me to believe most people haven't been able to get the dismissal or don't follow thru with the vacate judgment.