Lets assume that I've created a multithreaded VFP COM DLL that will be invoked by an ASP application. Lets further assume the my COM DLL in turn uses a third-party DLL such as FOCUS.DLL or FOXTOOLS.DLL. How do I know if these other DLL's are thread-safe? How does the system deal with a single-threaded DLL being loaded and used by a multi-threaded DLL? Do I even need to worry about it? Thanks very much!