CompuServe Messages

I have a 16-bit application that I am targeting for both NT and Windows 3.1 platforms. It works fine on Windows side but some spurious unhandled exceptions occur on NT. I am using MFC to build this app. I tried using MFC exception handling and that would not catch these exceptions I mentioned. My question is how can I catch all the exceptions (other than the ones that are thrown from MFC) using MFC exception handling? Is there a good example on this? Thanks in advance, Prasad