Modifying Bundle's Info Property List

I don't know which conference these questions are best suited. Please tell me if this message needs to be redirected. I'm using the Core Foundation Bundle services to obtain the information property list for a driver bundle using the routine CFBundleGetInfoDictionary. However this routine returns an immutable reference and I need to modify this information property list. How can I modify the information property list for the bundle? Also since the bundle is a driver and will reside in /System/Library/Extensions, will I have a file access issue? The property list is being modified from a system preference pane in user space. How do I get the necessary access? Thanks, Sean