The installer does not work, so I had to extract it's contents using Universal Extractor.
I copied MLScreenCapturePXT.dll to System32 and registered it with the command "regsvr32 MLScreenCapturePXT.dll".
Then I laboriously made the default registry settings using the notes supplied in the help file. I opened the property page from GraphEdit, but I found that only the Track Foreground Window option would work.
If I selected Get From Window there would be nothing in the drop down dialogue box and the Pick Window button does nothing.
I did manage to record a a video using this filter in conjunction with VirtualDub but the CPU usage topped out at 100% and there were dropped frames galore.