Calling native code for J2ME Apps


Is there anyway that I can access Symbian Code from J2ME. I am working
with Nokia 6630 [It has Symbian OS, CLDC 1.1, MIDP 2.0, WMA 2.0].
I need to write a SMS handler for any SMS that comes to the handset.

I have written a Code in J2ME but it can only listen to a specific Port
It seems that one can write a C++ code that can access SMS Messages
from Inbox.
So, how can I call the C++ code from J2ME based application so that
I can retrieve those SMS Messages?

Is there some way for a J2ME Application to Communicate with a C++
Please tell me any workarounds that you may know