As en exercise in manipulating classes in VB.NET I have written a little editor for ACP Plans. This does NOT create plans (a la Planner), although you can manually enter a plan. It is basically a replacement for using Notepad.
I keep making errors when modifying my plans, so I hope this will enforce a little bit of rigor in my editing. For example, I often get different filter numbers in Count / Interval / Binning / Filter commands. I also have trouble going from Local to UTC time, and often can't remember the various parameters of commands.
Anyway, have a look if you like; let me know if it has problems The setup file is attached.