[mod_python] POST Data Problems

Hi,
I am new to mod_python but it seems to be really nice to use, but an 
having a really frustrating problem.  I am writing a paypal notification 
handler in it and am running into some problems.  Here is what I need to 
do.  The paypal notification system will POST data to my script and in 
order to verify the order, I need to POST all the post data back to a 
specific URL at paypal with a var, cmd=_notify-validate, appended to the 
end of my POST request.  Thats it, pretty simple, except that I can not 
figure out how to get it to work.  And here is the problem that I am 
running into, the POST data has to be in exactly the same order as 
before.   When I use mod_python.publisher it places all of this data 
into a dictionary and the order is changed.  I have tried to follow a 
couple posts from various message boards on how to get the raw POST data 
string, but to no avail.  Can anyone please tell me how to get that 
information.
    TIA
       Quinn