It is a stand alone program available from the DXO site and there is a trial versionDo you use that as a lightroom plug in or with something else?
The demonstration picture on their front page (of the building) is exactly what I am talking about when I said that too much looks odd. The angle of view in the picture (looking up at the building) implies that there should be some perspective. Removing all of it just looks strange , like the building is distorted. (Although the "before" shot is bloody strange, too - almost like they deliberately un-corrected it - it has a great deal of distortion) Better to get further away from the building in the first place and get it at a shallower angle with a longer lens. Severe correction like they are demonstrating should be a last resort.It is a stand alone program available from the DXO site and there is a trial version
http://www.dxo.com/intl/photography/dxo-viewpoint/features