Embedding Python: How To Hardwire Module Search Path

[Robert Kiendl]

I've embedded python into a C++ - windows app by a
PyImport_AppendInittab() +  Py_Initialize() method.

Py_Initialize() calculates a module search path from the
windows-registry settings.

I want to prevent Python from doing that and want to hardwire the search
path to a app. relative path ("<app>/pythonmod") which points to a
minimal python bunch to avoid the need for installing python.

Does anybody know what to do prior to Py_Initialize(). Or am I
completely wrong?
PySys_SetPath() crashes when called before Py_Initialize(). 

Robert