I am struggling with a hopefully simple problem in ipython .0.8.4.  Basically, I'm finding that I need to exit the interpreter when i add a new module to site-packages.  I've tried reload et al, but these do not seem to have the effect i want, ( that effect being that i can stay in the interpreter, adding new modules to the python path , and having them available to me ) 

Is there a way to do this without exiting the interp?