I recently had a civil judgment in IL removed(Feb. 10, 2009). I settled on a payment w/ the OC. I completed a Satisfaction(Release) of Judgment form, and had the OC sign off on it. Once I had the Satisfaction of Judgment form, I filed a motion to vacate the judgment. That was it.
It was completely free. You should be able to obtain the Satisfaction forms online. I know court forms seem intimidating, but they are fairly easy to complete. As far as the motion, I simply went to the Motion Counter at the courthouse, and they gave me a sample form to review so I could complete mine. The whole process from settling with the OC and getting the judgment vacated took 1 1/2 months.
Good luck
