[plt-scheme] request: pointers to FFI intro

I would like to use certain python libraries (pygame)
from 
DrScheme (using the "graphical" mzscheme language). I
would hope someone on the list can point me to some
"hello world" examples of this.
I read the CFFI doc at
http://download.plt-scheme.org/doc/204/html/mzc/mzc-Z-H-2.html#node_chap_2
but I'm not sure I'm on the right path.
I guess I must use "CPython" to access python
functions via C. Is that right? 
Might it also be possible to call python functions
from mzscheme through .Net which they both support 
AFAIK? Would that perform acceptably?
If this were simply a logic oriented app I would just
use XML-RPC and be done but performance is essential
to
a graphical program.
TIA


		
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