New code that shows "Fractional Disk Soft Shadows" implementation is available in the download section:
 Fractional Disk Soft Shadows (2.68 MB)

I updated the code available on this site to be compilable out-of-the-box and also to take advantage of latest DX SDK.
You can find code in download section or use following links:
 Source code and binaries - Project6 - Lighting (5.5 MB)
 Source code and binaries - Accelerated real-time rendering (12.26 MB)