Being a novice should keep you far away from any program that alters, changes or deletes anything from the registry, otherwise sooner or later you will have to learn how to reinstall Windows XP.
What you have listed above, for the most part are commands not programs, and even many of those should not be used unless you know exactly what you are doing.
However, I still use these commands as a novice and use registry cleaners like Registry Booster, System Mechanic, And CClean. Possibly I under rated my level of skill and should ask, What registry entries may be the ones that are being deleted or revised that are deleting my commands from the Start-Run command?
In any event, if you know, I would appreciate any help or advice you may have to make the appropriate changes, even registry edits, or exclusions to the registry cleaners, to correct my problem. I have always unchecked the cleaning of, "Start Run" areas in all cleaning of files or references to this area in registry cleaners when available.
I have a home network of computers and I keep them all clean, updated, and free of malware as much as possible. I guess I'm a step above a real novice, however, I'm novice enough to ask for the answer to my problem, which I thought might be fairly easy.
Therefore, I would greatly appreciate any further help or support you may have to resolve my problem.
Thank You very much,
M.E. Stone, M.D.