python script and C dll in debug mode

[eve]

I attempt to run Python script (pyScript.py) which will import a
myModule.dll written in C.
If myModule.dll is in release mode, the program will run fine. 
If myModule.dll is in debug mode, I get the import module not found
error message.
In the DOS command, I run >> python_d pyScript.py
I get "Exception import No module name myModule" message.
Is there something I am missing here.

Thanks in advance
Ngoc