Anyone with so-called runner's knee?

I’ve been diagnosed with it, also called patello-femoral pain syndrome or chondromalacia. Wearing braces helps some, as does ibuprofen when it’s worse. From looking it up, I have the impression that any/all the different exercises, NSAIDs, etc may or may not help, and that it will probably take months even if they do. I find it all very discouraging. What have you done for it, and what sort of results have you had?