IDLE: How to point it to the Python executables I want it to see on Windows

[Bill Davy]

Assuming they run as a separate thread, I want to point IDLE to 
.../Debug/Python_d.exe one day and .../Release/Python.exe for the next.
Also, is there any easy way to run the .../Debug/Python_d.exe so started 
under the MSVC debugger?
tia,
    Bill