Started some work on MyHD from Macro Image Technology. It can be driven already by using DABDig's support for TVPI-mode. However, this will not work if DABDig is being run as a background task. Plus - TVPI-mode sometimes requires keyboard strokes to be sent which can get blocked by anti-virus tools (AVG in particular).
The underlying mechanism appears to be very similar to FusionHDTV - i.e. holding the recording schedule in a combination of registry and a database. Have worked out most of the fields and have someone willing to test.